The only one I've seen was where two cops were restraining someone while being filmed. One of the cops had his knee on the arrestee's head/neck, and after some time his partner (administering cuffs perhaps) noticed it and wrenched his knee away.
I think I saw that one; they took the knee away because it was on a white guy's neck, wasn't it? We've already seen what happens when it's a black guy's neck
In this case, the knee was there regardless and the colleague recognised the "bad optics" (as they say). Looked like natural behaviour from the first cop rather than "I'm trying to prove we kneel on all necks" too.
