he should have been suspended, but arguments like that are for the primary school playground. Especially as you say all teams get breaks, United got one with that but you're moaning about it.
You're right, these things do happen and will happen again to United and will happen to their opponents on occasion too. However, next time United do get a break, possibly on Sunday, I look forward to again reading your reasoned take on it.
Oh, and there is nothing more comical than a fan of Self Pity City FC going on about other teams fans "greeting".