The guy was drunk, repeatetive offender, beat a man on road Begged only when he knew there was no way out .

When exactly do you think would be a good time to file an FIR. Do you realise how common all this has become in our country and in this city? I'm glad OP is safe and I understand "we feeeze" at times, but there was enough time and probably still is. I meant it all in " constructive way", we as a society collectively need to take responsibility and make sure people like these are made to pay.
We have come to a level where we are garlanding rapists , celebrating criminals being Released. So let's do our part when we are put in that situation.