How bad is the epidemic of violence against transgender women? It's hard to know.
http://www.vox.com/2015/10/20/9574239/transgender-murders-epidemic
VOX/Updated by German Lopez on October 20, 2015, 1:00 p.m. ET
"But are these murders a growing epidemic? The answer, worryingly, is we don't know. Local, state, and federal governments don't collect much data on trans populations or violence against them, which means the 21 deaths we know about are — at best — a bare minimum, and it's unclear how big of a problem those deaths signify."