How do i approach the group of north eastern people in college?

My college is in blr and tho i have a lot of friends from all parts of India, I don't have any north eastern friends. Prolly cause of racism, but they all stick together. I really wanna go talk to them and ik most answers would be like then go and talk or that's what im assuming. I wanna ask would it be okay if i go say hi? Would they be interested in being my friends? what are the don'ts? Should i go and say hi to one of em when they're alone cause yk it's kinda hard to approach a group.Any sort of tips are appreciated. Have a nice day!