Political correctness, to a certain
extent, when people are actually being deliberately
offensive and
prejudiced, can be a good thing, however it has now got completely out of hand.
For example: In schools, nothing, but nothing is allowed to have connotations that might be considered racist. Blackboards and whiteboards do not exist any more, but are simply 'boards'. Children are also no longer permitted to sing the song 'baa, baa, black sheep', as it is also racist. The lyrics have been altered, and the song is now titled 'baa baa sheep sheep'.
In the wider world, my favourite example of policitical correctness gone quite crazy is 'follically challenged', translating as 'bald'.