Prosecutor, defense argue over whether slaying was self-defense
Arizona capital receives perfect score in annual HRC index
Lifting of ban opens organ donor pool by 500 to 600 people annually
Police highlighted three unsolved trans murders at event
Longtime partners accept Medal of Freedom on their behalf
Republicans 'do not walk in lockstep' on issue
16 states and D.C. now allow gay nuptials
Parliamentarians approved measure in first of three votes
Stabbing occurred on Capitol Hill in 2012
LGBT activists join campaign to persuade Clinton to run in 2016
