activator - (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription. 1  substance - the real physical matter of which a person or thing consists; DNA is the substance of our genes.
In 2006, in cases where police officers intentionally fired a gun at a person, they discharged 364 bullets and hit their target 103 times, for a hit rate of 28.3 percent, according to the departmentâs Firearms Discharge Report. The police shot and killed 13 people last year. In 2005, officers fired 472 times in the same circumstances, hitting their mark 82 times, for a 17.4 percent hit rate. They shot and killed nine people that year.
In the first five months of this year, 19 unarmed black men were shot and killed by the police in the U.S. The Guardian compares that with Germany, where 15 citizens of any race were fatally shot in the two years from 2010 to 2011. California led the nation in the number of victims. So far this year, 107 people died in police-involved incidents in the state, significantly more than Texas, which came in second with 67 deaths. Florida was the third most deadly with 46. Per capita, Oklahoma tops the list with 29 deaths.