The problem with this what constitutes 'hatred' and what happens if the incitement is merely truthful but offensive speech?

For example if I were to state that Jews were overrepresented in comparison to their national population numbers in the early Soviet Bolshevik government would this be hateful? If so, would truth be a defence?

If inciting hatred is a crime would black rappers be subject to legal sanction due to the following...

Racist Rap Lyrics

Or would these laws be applied to the majority alone? Would these laws be applied equally without measure or would they be applied in an unequal measure?