Wasn't it even rumored for a while that PKK shot the prime minister Olof Palme in retaliation?

That being said I think Sweden has been a bit weak on Kurdish terrorist supporters recently. Most (at least Scandinavian) left wing parties have a soft spot for leftish terrorists. I can see why, they are usually oppressed underdogs.

It also helps that PKK are ostensibly fighting a series of authoritarian govs combined with the fact westerners are shielded by the natural disconnection and "othering" of the consequences of political violence happening to citizens in a far-off country they have no personal connection to. It makes it easier to not care they've killed hundreds of civilians, heavily recruited child soldiers, etc when you can more easily focus on the group being founded by a political-prisoner who flirts with trendy radical academia-friendly economics.

Plenty of normal people are victim to this sort of flirting with ideas rather than confronting the reality on the ground. You see the same sort of thing with people who (or at least used to) defend Russia for being tough, when in IRL it was mostly a persuasive sheen on top of a cheap mafia state.

The PKK terrorists inflict bombs and child rapes and kidnappings outside the white world. Hence the “tolerance”. A report by the UN of their child kidnappings and rapes in Syria, Iraq and southern Turkey:

https://menaaffairs.com/un-report-again-reveals-ypg-pkk-terr...

Your link doesn't purport to show child kidnappings, etc. It says they recruit child soldiers, but it doesn't say those children are slaves.

Also, it's not as much who is targeted by the attacks as why. The Kurds are under genocidal attack on three sides and have a lot more global sympathy than other groups.

Yes, but I would not use the word "rumor". It was one of the main theories by the Swedish police (which they later on realized was incorrect).

(maybe rumor is correct word, just feels a bit odd to use in this context)