People who are angry at John Lennon, famous Beatles
Reasons for this hate might be anger at his (seemingly) liberal attitude to everything, his anti-establishmentism or just haters of his music. The reason is usually political though.
He was very much against religion which made a lot of people angry at him. Of course, this is hypocritical since he says he's so "liberal", yet he wants to force people to believe what he wants by removing religion.
Some people therefore are not angry at him for being against religion, or for his political beliefs, but for his hypocritical attitude to things