Yes this is FC police uniform, although he is removing illegal encroachments from the road side which is a good thing, but you can't go around slapping people and throwing food around. Two wrongs don't make a right. Har cheez kerne ek taur tareekha hota hai.
Give them 1 hour to remove everything if they don't comply, bring a govt truck and seize all the goods and stalls, fine them and give them a chance to reclaim their property and sign a declaration not to do it again, and if caught doing again, they will be given a bigger fine and even time behind bars