Matt Barnes Says Kanye Needs to Take Gang Threats Seriously

Kanye West shouldn't just laugh off gang threats in L.A. ... so says Matt Barnes who says the real gangsters in Los Angeles don't mess around.

The ex-NBA star was leaving Catch when we talked about Kanye's appearance on "TMZ Live" -- including Yeezy's reaction to Daz Dillinger's recent call for the Crips to "f*** up Kanye."

"You gotta be careful," Barnes said ... "They don't play out here with gangs so you're treading on thin ice."

Barnes also reacted to Kanye's confession about getting liposuction -- and says it shows Kanye is "not in a comfortable, secure place as a man."

Barnes says a lot of what Kanye is talking about these days -- from Trump to his views on slavery -- are "bullsh*t" -- but he believes the old Kanye can still be saved.