Exaggeration

In England and Wales the Public Order Act 1986 prohibits, by its Part 3, expressions of racial hatred, which is defined as hatred against a group of persons by reason of the group's colour, race, nationality (including citizenship) or ethnic or national origins. Section 18 of the Act says:

A person who uses threatening, abusive or insulting words or behaviour, or displays any written material which is threatening, abusive or insulting, is guilty of an offence if—

(a) he intends thereby to stir up racial hatred, or (b) having regard to all the circumstances racial hatred is likely to be stirred up thereby. Offences under Part 3 carry a maximum sentence of seven years imprisonment or a fine or both.[6]

The Criminal Justice and Public Order Act 1994 inserted Section 4A into the Public Order Act 1986. That part prohibits anyone from causing alarm or distress. Section 4A states:

(1) A person is guilty of an offence if, with intent to cause a person harassment, alarm or distress, he— (a) uses threatening, abusive or insulting words or behaviour, or disorderly behaviour, or (b) displays any writing, sign or other visible representation which is threatening, abusive or insulting, thereby causing that or another person harassment, alarm or distress.

A person guilty of an offence under this section is liable on summary conviction to imprisonment for a term not exceeding six months or to a fine not exceeding level 5 on the standard scale or to both.[7]

The Racial and Religious Hatred Act 2006 amended the Public Order Act 1986 by adding Part 3A. That Part says, "A person who uses threatening words or behaviour, or displays any written material which is threatening, is guilty of an offence if he intends thereby to stir up religious hatred." The Part protects freedom of expression by stating in Section 29J:

Nothing in this Part shall be read or given effect in a way which prohibits or restricts discussion, criticism or expressions of antipathy, dislike, ridicule, insult or abuse of particular religions or the beliefs or practices of their adherents, or of any other belief system or the beliefs or practices of its adherents, or proselytising or urging adherents of a different religion or belief system to cease practising their religion or belief system.

https://en.wikipedia.org/wiki/Hate_speech_laws_in_the_United_Kingdom