Have you ever considered why these people hate you? It may have something to do with years of overstepping boundaries and dragging the big, sweaty ballsack of America all around the Middle East.
No one is debating that Soleimani was a good guy or not. He wasn't. But killing him, unauthorized, in a foreign country amounts to an assassination. Threatening attacks on civilian locations in Iran is classless, and actually doing it would be a war crime (but history books are written by Americans anyway so they would never admit that).
Imagine if Gen. Mark Milley and his convoy were bombed and killed in Canada by the Iranian military because some rogue American militants (who may or may not have support from the American government) were attacking the US Embassy in Ottawa? Oh man. The nukes would have gone off by now.