[TigerClaws]

This video claims he was in Dallas and is seen, but does not appear to be the same person because the ears are differently shaped.

But posting for reference:

http://getoffthebs.com/baton-rouge-gunman-gavin-long/

[kaehurowing]

TheBlaze is treating it as real.

http://www.theblaze.com/stories/2016/07/17/you-gotta-fight-back-videos-photos-of-suspected-baton-rouge-shooter-emerge/