I’ve watched the video at least ten times. First, the event involves one of the three (not all three), and he basically trips and pushes the AfD to the ground (against what appears to be a cobblestone street...but it’s awful grainy video). The second and third guy are not involved in any way, other than accompanying the first guy.
The three aren’t walking together...there’s two trailing the political guy, and the third guy is at least 20 ft behind and trying to catch up to his associates.
The attempt by the cops to say it was robbery? No, the video clearly shows no attempt to rob the politician. After the guy is in on the ground...the first two guys move on (never stopping). The third guy simply passes the politician on the ground and he’s still trying to catch up with his buddies.
Beyond that....the video proves nothing much (for or against the injured AfD guy).
The first video show the AfD man walking and closely followed by three men. If you LOOK closely at that first video you can see the “followers” pull some kind of disguise down over their faces. The final video shows the END of the attack where the AfD man goes to ground and the attackers rapidly leave.
There is not a video (at least none shown) of the EARLIER part of the attack. That may have been where most of the injuries were incurred and may ave involve ore than one attacker participating.