i think it is bad to forbid people to speak it is own language...in Egypt i think we dont have this problem as most of egyptian communities speak arabic but with different accents .....but we have nubi community which has it is own languge not arabic ...i think they can speak this languge with each other but the formal language is the arabic ..my opinion is that every people has the riht to talk they language but the whole state must have its formal language ..the language of majority of its people
