Help Finding Old Clip: 2 on 1 Stabbing

[IPAguy]

Looking for a friend: "So, basically, this guy is following this lady in a city, and when she’s walking past an alley, suddenly someone else jumps out and grabs her, and the first guy stabs her (in the front, maybe?). She’s then thrown to the ground, and while she’s struggling to get up from the stab, the two guys bend over her, count down, and then together stab her in the back through the heart. They then flip her over, and she’s quite dead, with a great death stare and all. The clip then cuts to night where police people are at the scene, though I don’t think the body is shown again. Like I said, it’s probably a long shot. I think it’s another clip that was on ohmegusta’s original channel (or the early 2010s one, anyway), and I haven’t seen it since when that channel got deleted. It’s probably been 7 or 8 years I’ve seen it. Ring any bells?"

I know I've seen that scene before, but I can't place it. Any help is greatly appreciated!