There is at least one more detail that makes this look pretty bad for the pro-Palestine side, but not necessarily enough to call this a 'pogrom.'
They seemed to target people based on their home country. The Jewish side is also claiming that pro-Palestine assailants coordinated the assaults and used some Palestine flags as bait.
On the other hand, you have the goings-on from OP and further knowledge that Mossad agents traveled with the soccer team.
So we obviously have shitty soccer fans, maybe some covert IDF guys, and maybe a plot to target Israeli fans (or said IDF guys).