Soleimani's not some new figure - he's been doing this for decades. The US, UK, and Israel have all had the opportunity to kill him at various times - they've all had restraint. Why? Really think long and hard about why even Israel, who've lost far more Israelis to Hezbollah attacks, would opt for restraint rather than go after this guy. Sun-Tsu once said, "if you're going to surround your enemy, leave them an escape route" - because when you've got someone feeling cornered, they'll react dangerously. I'd argue if Iran aren't cornered now, they're very fucking close to being cornered.
The US-Iran tensions being ratcheted up like this started a few years back with a move from the US that did absolutely nothing for stability in the Middle East and has been consistently stoked by both sides. Both sides keep escalating, but this is an unprecedented move. And it's an option that other world leaders have had the opportunity to act on... but refrained because the risk of blowback from that move is too great.
There's a reason why every world power involved in the Middle East is urging calm from Iran right now, while the orange guy is just saying "DON'T RETALIATE OR WE DO AGAIN" - Iran can't do anything meaningful to hurt the US, but Iran can do a lot to throw the region into even more chaos.
Not wanting to go to war with Iran = hating Jews?
In any case, this is bad for any Persian in the world who'd have hoped to see Iran open up to the rest of the world. Because what this ultimately does is tell Iran: get nukes ASAP. Iran only has to look at North Korea to see, a nuclear nation will not be bullied easily.
The reformers in Iran are so badly politically damaged now, some are probably going to be barred from running for office by the Guardians Council. They're seen as the politicians that hurt Iran by sitting to the table to negotiate with the West, while the other side was saying "you can't trust the west, they'll break the deal." Hardliners are vindicated and political support for a nuclear Iran will be at an all time high.
And a nuclear Iran means the Islamic Republic of Iran is here to stay for eternity.