meaning

Hi!
Can someone tell me the meaning of this sentence:‘Some ex-prisoners try to get their own back on police informers’.

Thank you!

Which parts of that are you having difficulty with, Antonella? It has a literal meaning - there are no strange expressions.

Hi!

‘to get their own back’ is a phrasal verb which I couldn’t understand in the context.
Thank you!

To get your own back on someone is to get revenge on them.