If you're planning on heading to Earatik Statik's record-release party Saturday at Subterranean, you should know about the controversy surrounding the show.

Turns out that DJ 3rd Rail (aka The Hip-Hop Avenger), one of the openers and a longtime DJ on WNUR 89.3 FM, doubles as a "Guardian Angel." These are volunteer crime patrollers who roam streets, subways and other public areas at night, trying to keep them safe for all.

The trouble stems from this video, which shows 3rd Rail and other angels aggressively detaining two young'uns for tagging at the Western Blue Line station.

We're not saying defacement of public property should be allowed without repercussions, but we do know that graffiti stands as one of the four pillars of hip-hop culture (along with rapping, DJing and breakdancing). As such, this action certainly hurts 3rd Rail's credibility as a true member of the hip-hop movement, especially as one who admits to having been a graffiti writer at one time.

There's been talk in the community of boycotting the show, though that would detrimentally affect the many other acts deserving your attention (like All Natural, Juice and Diverse), so we wouldn't recommend it. But just be aware that things could get ugly during 3rd Rail's set.