My wife went to NJIT. The Desi student community was vibrant and active back then and it's probably the same now. If you want a taste of home, take the train to Metropark and head to Oak Tree Road or PATH to Journal Square and head to Newark Avenue. Both are huge South Asian communities with a great variety of restaurants from all over the subcontinent.

Within Newark itself I haven't heard of any instances of discrimination or such, just keep your wits about you and you will do fine.