Bipolar disorder, which used to be called manic depressive illness or manic depression, is a mental disorder characterized by wide mood swings from high (manic) to low (depressed). Periods of high or irritable mood are called manic episodes.
James Byrd, Jr. was not engaged in a federally-protected activity when he was lynched and killed. The Matthew Shepard Act expanded the 1969 Federal Hate Crime Law to cover these and other types of brutal murders.
The GFSZA, signed into law by George H.W. Bush in 1990, pretty clearly aims to increase the penalty for bad guys having guns in school zones. Sure, there are gun lovers who hate the GFSZA because it puts any restriction on their second amendment rights.