Rioters are "thugs."
Union organizers are "thugs."
The government doing something you don't agree with are "jack booted thugs."

Nigger in this context is anyone you consider less than human.

For riots it's blacks - followed closely by non-whites and then poor people regardless of race.

So when some calls someone else a thug - and they're not referring to an old school mafia guy, or an identified criminal they mean - nigger.

Next up: Inner city youths.