Lies. There isnt a single team in England without a considerable amount of racist fans. Iwobi and welbeck got alot of racist abuse last season alone from Arsenal fans.
Yup. Every club has a racist element, unfortunately it comes with the territory given the racial tensions in the UK. Brexit, Windrush scandal etc. etc.
What's important is how the clubs respond. Chelsea is bad but they swiftly banned the guy who abused Sterling last season. United and their players have quickly responded to the abuse of Pogba. Some clubs only address the racism when it happens to one of their own, from fans of another team.
But I won't mention any names