Brahmin is the name of a community.

If there is someone impostering as coming from a certain community and bringing disrepute to that community, then it is most likely he/she is not from that community. And if they are, then it is a case of a bad apple in the basket.

There are some sick people using social media to damage the image of another community. If he says 'Brahmin says'...he should be told to speak for himself.

Whoever this guy is, he is socially anchoring that people from that community behave this way or have such wrong opinnions.