text: FILE - In this Sept. 7, 2016 file photo, Joshua Vallum is photographed in the George County Regional Correctional Facility in Lucedale, Miss. A federal judge on Monday, May 15, 2017, sentenced Vallum... (Associated Press) 
   
   FILE - In this Sept. 7, 2016 file photo, Joshua Vallum is photographed in the George County Regional Correctional Facility in Lucedale, Miss. A federal judge on Monday, May 15, 2017, sentenced Vallum... (Associated Press) 
   
   GULFPORT, Miss. (AP) — A Mississippi man received a 49-year prison sentence Monday for the first-ever conviction on federal hate crime charges arising from the killing of a transgender woman. 
   
   In a case watched by the LGBT community nationwide, U.S. District Judge Louis Guirola Jr. sentenced Joshua Vallum in the 2015 killing of 17-year-old Mercedes Williamson. It was the first case prosecuted under the federal Hate Crimes Prevention Act involving a victim targeted because of gender identity. 
   
   Prosecutors said Vallum shocked 17-year-old Mercedes Williamson with a stun gun, stabbed her and beat her to death in 2015 to keep fellow Latin Kings gang members from discovering the two were having sex. Gang rules barred homosexual activity and declared it punishable by death. 
   
   Guirola could have sentenced Vallum to life in prison, but heeded a lesser sentence suggested in a plea agreement between defense attorneys and prosecutors, citing Vallum's neglected childhood and other issues. Both the judge and defense lawyers said Vallum's history of abuse as a child had to be considered. 
   
   "The taking of a human life because a person has a particular gender identity is particularly heinous and cannot be tolerated in an enlightened society," Guirola said in court in Gulfport. 
   
   Vallum pleaded guilty to the federal charges in December. He previously pleaded guilty to a state murder charge that led to a separate sentence of life without parole. 
   
   On Monday, Vallum begged forgiveness from Williamson's family and friends, though none of them were present — only a few reporters, the judge and Vallum's father and stepmother. 
   
   "Every day, I live with the guilt and regret of my actions," Vallum said. "If I could bring back Mercedes by giving up my life, I would gladly do so." 
   
   The case, watched nationally amid concerns transgender women are particularly vulnerable to violence, drew comment from U.S. Attorney General Jeff Sessions. 
   
   "Today's sentencing reflects the importance of holding individuals accountable when they commit violent acts against transgender individuals," Sessions said in a statement. "The Justice Department will continue its efforts to vindicate the rights of those individuals who are affected by bias motivated crimes." 
   
   LGBT advocates applauded federal officials' first use of the 2009 hate crimes law to prosecute an offense against a transgender person. 
   
   Demoya Gordon, attorney for the Transgender Rights Project of Lambda Legal, called the prosecution "significant" but noted it began under President Barack Obama's administration and added "the cake was already baked" on Vallum's sentencing when Donald Trump became president. 
   
   Gordon said her group remains concerned how Trump policies will affect transgender people. She cited the Trump administration's reversal of guidelines that transgender students nationwide should be able to use school bathrooms corresponding to their gender identity — among other steps. 
   
   "These actions invite increased discrimination and continued animus against transgender people," Gordon said. 
   
   Federal prosecutor Julia Gegenheimer had said at Vallum's plea hearing in December that he began planning to kill Williamson after a friend called him in May 2015 to say he'd discovered Williamson's identity. 
   
   Vallum lured Williamson into a car in Alabama and drove her 50 miles (80 kilometers) to his family home near Lucedale, Mississippi, prosecutors said. They added he shocked her with a stun gun and stabbed her with a pocketknife. When Williamson tried to run, they said, Vallum chased her and bashed her head with a hammer. 
   
   Public defenders submitted a sealed brief Monday to Guirola outlining Vallum's troubles. 
   
   "Mr. Vallum lived through a childhood that was characterized by abandonment and neglect," said public defender Ellen Allred. "It's difficult to image how a mother could lock a two- or three-year-old child in a room for house on end while adults did drugs." 
   
   Allred said Vallum first tried to kill himself when he was 7 or 8. 
   
   "We can't go back and change Mr. Vallum's childhood, just like Mr. Vallum can't go back and undo what he did to Mercedes," Allred said. 
   
   Vallum initially told sheriff's deputies and later told The Sun Herald newspaper that he found out that Williamson had a penis on May 30, 2015 — moments before he killed her. He said he "blacked out" and doesn't remember the crime, a variation of what's known as a "gay panic" or "trans panic" defense. 
   
   He declined to speak with The Associated Press in a March letter, citing advice from his lawyers, and didn't address the issue Monday. However, Vallum has never contested testimony and evidence that he long knew Williamson was transgender. 
   
   A witness in state court had testified previously that Vallum and Williamson had sex multiple times while the witness was a roommate with Williamson. Williamson had transitioned from male to female before dropping out of high school in Alabama, leaving her parents' home and drifting from place to place. 
   
   ___ 
   
   Follow Jeff Amy at: http://twitter.com/jeffamy . Read his work at https://www.apnews.com/search/Jeff_Amy . ||||| Story highlights Joshua Vallum pleaded guilty to killing his ex-girlfriend 
   
   Justice Department: He killed because she was transgender 
   
   (CNN) A Mississippi man was sentenced to 49 years in prison Monday and fined $20,000 for killing his ex-girlfriend because she was transgender, the US Justice Department said. 
   
   Joshua Vallum, 29, of Lucedale is the first person prosecuted for a federal hate crime in which the victim was targeted for being transgender, the Justice Department said in a news release. 
   
   Vallum knew Mercedes Williamson was a transgender teenage girl when they began dating, but kept her gender identity secret, prosecutors said. 
   
   They broke up in 2014 but Vallum decided to kill her in May 2015 because a friend had discovered she was transgender, the Justice Department said. 
   
   Merecedes Williamson 
   
   Vallum, a member of the Almighty Latin Kings and Queens Nation crime gang, feared reprisals from gang members if they found out about the relationship, the Justice Department said. 
   
   Read More
target: – A Mississippi man received a 49-year prison sentence Monday for the first-ever conviction on federal hate crime charges arising from the killing of a transgender woman, the AP reports. In a case watched by the LGBT community nationwide, US District Judge Louis Guirola Jr. sentenced Joshua Vallum, 29, in the 2015 killing of 17-year-old Mercedes Williamson. It was the first case prosecuted under the federal Hate Crimes Prevention Act involving a victim targeted because of gender identity. Prosecutors said Vallum shocked Williamson with a stun gun, stabbed her, and beat her to death to keep fellow Latin Kings gang members from discovering the two were having sex. Gang rules barred homosexual activity and declared it punishable by death. The couple had broken up in 2014 but a friend had recently discovered Williamson was transgender, per CNN. Guirola could have sentenced Vallum to life in prison, but heeded a lesser sentence suggested in a plea agreement between defense attorneys and prosecutors, citing Vallum's neglected childhood and other issues. Both the judge and defense lawyers said Vallum's history of abuse as a child had to be considered. Vallum pleaded guilty to the federal charges in December. He previously pleaded guilty to a state murder charge that led to a separate sentence of life without parole. On Monday, Vallum begged forgiveness from Williamson's family and friends, though none of them were present—only a few reporters, the judge, and Vallum's father and stepmother. "Every day, I live with the guilt and regret of my actions," Vallum said. "If I could bring back Mercedes by giving up my life, I would gladly do so."