That is interesting. I noticed a very similar thing when I was trying to get a handle on what percentage of murders were committed by illegal aliens.
http://gunwatch.blogspot.com/2015/07/texas-murders-by-illegal-aliens.html
All of this is ignored by the main stream media which is why Trump bashes the hell out of them. People have no idea how bad it is. Here’s a list (partial) of all the people murdered by illegals. It goes on forever and remember Obamas demand that Trump not deport the DREAMers?? Read the first one......
http://www.ojjpac.org/memorial.asp