If the political brass had that much gusto, there'd be a lot of retaliation for a hundred other things.
As of now, I'd say AAP made deals with many local Mafia and time has come for AAP to deliver. The ones that backed AAP are settling scores.
From my time in Punjab, I felt a weird superiority complex roll off from many Punjabi Sikhs with respect to Hindus. There's also the caste thing with Jatt di muqabla crap. The undercurrent and overt superiority complex is already there.
Canada is just little Punjab. Khalistanis operate there with impunity, this is chump change compared to that.
That aside, Punjabi youths massively copy the ghetto nibba culture. This is bragging in that culture. That's what they're doing.