I'll use the C word - convenient! (What if he didn't see Fabregas's slap? What was the yellow for? If he did see the slap on Fernandinho, why didn't he show red?)
Call me bitter if you want, but Taylor didn't see the slap and at least one of the three former elite referees who reviewed didn't think it was violent conduct. Have the FA even looked at Ibrahimovic's kick on Coleman's head? Other C words come to mind.