Indians.
I don't consider myself racist and I genuinely try to see people as individuals, judging by word and deed. But I've never seen a people that consistently just views everyone else from a completely selfish "what can I get from this person?" mentality. Obviously there's the constant phone scams, but this goes back to my experiences in college and in the workplace too. I've worked in customer service and seen them just try to take advantage of our generosity in such a shameless insistent way... It really gets under my skin, being viewed not as a human being but as some kind of piggy bank or favor dispenser, just get what you want out of me and then I never hear from you again.
People complain a lot about black people on here, and I can see some prevalent negative cultural trends you all do, but I can genuinely say most have a certain baseline of normalcy that they can fall back on and will call each other out on bullshit from time to time, like they know the hoodrats from the rest. And there are a lot of genuinely decent black people out there. I don't see any of that from Indians, it's like they just assume everyone tries to swindle everyone else out constantly, so they might as well get in on the action, zero shame or awareness.