Masuma Khan should be able to post any opinion on Facebook subject only to the rules mandated by Facebook, which ought sometimes to be more liberal than they are. So should everyone else be able to do.

If others can use profanity or can attack her in harsh terms, she can reply on the same level.

The university should be able to censure her in respect of her student authority position, only if they would censure others for acting similarly in the same position.

In that context, she is right and it is right for defenders of free speech to support her.