Photo © Copyright 2008 by Jonathan Alcorn (Sundogg) via the LAist Featured Photos pool on Flickr One of the gunmen involved in yesterday's Glassell Park shootout has been identified as a member of the Avenues gang. Daniel Ivan Leon was killed by police following his participation in a fatal drive-by shooting that claimed one life. Ok, so there wasn't anyone jumping onto the 110 Freeway today, but there was a police pursuit on the......