I also saw anarcho-communist flags. Especially in this vid, there are several.
http://m.youtube.com/#/watch?v=uAHHmOXjtYw
Agree. Here is a link to the RevCOM bunch of hate. Holder should be focusing on these types. Sadly he is like them.
http://revcom.us/a/348/michael-brown-to-eric-garner-this-has-to-stop-NOW-en.html