Activation lock

Hello, I have an iPod touch (5th gen) which was given to me as a gift from my sister who got it from the US. Upon turning it on I got to know that it has an activation lock on it. She told me that she bought it from a thrift/pawn store back there so there’s no way of accessing the original owner to it. Is there any way to get rid of that activation lock? Please help me out ;—;