Reading their tweets, they (initially) said that they didn't believe that Iran had shot down the Ukraine Airlines plane because everything the US says is a lie - but not a word about Iranian claims that they killed 80 US servicemen in the missile strike, a lie so obvious that no one wants to even talk about it any more.
Iran doesn't kill any Americans out of fear of a major response, and they say Iran wisely wanted to avoid any casualties (that they claim they did.)
As I recently mentioned, official Iranian media publishes, in English, official antisemitism, even from white supremacists - and no reaction from the people who claim to care most about bigotry.
And Iran's proxies include the Houthis, whose very logo is explicitly antisemitic:
Translated:
When you define all antisemitism to be "white nationalism," then you become blind - and complicit - with all other kinds of antisemitism.