I watched the video and here's what I observed. A disorderly protester being escorted out of the rally. He was waving and making some sort of gestures with his hand. A man stepped up and sucker punched him.
There is no indication that this protester was a member of any sort of hate groupe (like the KKK) nor was he carrying any signs with derogatory or hateful epitaphs.
The comparison is an utter failure.
Your equivocal response is an utter failure. Among other things, you deceptively characterize the protester as "waving and making some sort of gestures with his hand." As you know, he was flipping off the entire audience (and assumably matching that gesture with his words).
It was impossible to tell in the video but I'll take your word for it. How is flipping the bird at an audience equivelant to a derogatory sign aimed at a particular ethnic/racial/etc group? He's a disorderly protester being escorted out. Flipping the bird and yelling what ever obscenities he was yelling is not speech aimed at particular groups such as your example. There is nothing that differentiates him from any other disorderly protester at political event.
Thus my alternative scenario was apt, whereas your description is transparently dishonest. Also, the reference to the KKK in my example is certainly an appropriate counterpoint to the Black Lives Matter movement, which has been heavily involved in these political protests.
It was and example that, to put it mildly, stretched the concept of "apt" to the point of ridiculous. Is there any evidence that this young man IS a member of the Black Lives Matter movement, first off.
Secondly - has the Black Lives Matter movement engaged lynchings, murder, and other similar acts the KKK is known for?