"language rights" means the right to use one's own language and not to be discriminated because of one's native language. Some examples where those are needed are:
1) primary school with one's native language as the language of instruction
2) the right to pray in one's own language
3) the right to address the authorities in one's language
4) the right to speak one's language in public
5) the right to teach one's language to own children