Doesn't South American cartels have hitmen?

Or do I don't get the difference between paid killer and assassin?

I’d love to see everyone from the Reddit sub move over here. The quality is just so good.

Alas here I am linking to Wiki

Carlos the Jackal

Both is likely the correct answer, there have been a few; but most likely myth overshadows reality

This sounds more like you are specifically talking about hitman for hire, rather than just assassins. Assassins obviously exist.

Hitmen for hire have existed as well, but historically they more often tend to be tied up with organized crime, rather than a random number any person can call up for a job.

I know Wikipedia is not the best source, but it is a starting point. Look at the notable persons segment and take note how it is almost entirely organized crime related.