no no, you didnt miss anything
it's just the usual, police with little-man complex
And you know this just how, exactly?
That video actually suggests the complete opposite. The fact the police were ordering him to leave in the first place indicates he was in some form of altercation - probably with the guy in the baseball cap, as the cajoling between them indicates, further indication when they start to "push" each other.
To add salt to his own wounds, he clearly mouthed off to the officers a few times, and even when being tasered and struck with the batons, continued to mouth off.