Poor description. One guy came out to apparently hug Acuna. Two umpires (?) tried to pull him off Acuna, and a second guy came out to rescue (?) his friend; additional umpires tried to keep him away, and they ended up knocking down Acuna. Definitely a bad situation, but there doesn’t seem to ever have been an attempt to harm Acuna.
I was watching the game and the commentators were acting like it was a big deal but didn’t quite know what was going on. Someone told me the next day that the fans were just trying to get selfies with Acuna.