"You can be anti-Israel...the second you condone
Hamas or its actions, in the slightest, THAT starts
to become Antisemitism"
I think there is a grey area (which perhaps Hamas doesn't occupy) between an anti-Zionist position - which justifies killng civilians as a means; and an antisemetic position - which justifies killing jewish civilians as an end.
But that arguement isn't interesting to me, so to avoid further digression; It is entirely possible to sympathise and understand the actions of Hamas, without condoning them (indeed i take a firm pacifist stance on most things, including violence against animals, hence my vegetarianism) but i can still have an opinion about Hamas.
I could infact be of the opinion the Israel should be disestablished (though most states are brought to an end via violence) I don't actually adgocate this position, i think Arabs and Jews can and should live peacfully side-by-side in Israel and throughout the middle-east - but the current state of affairs is deplorable. (i think destroying Israel would leave no state, which would likely be worze than the current setup, though perhaps not as bad for some than for others)
I can understand Hamas, in both it's anti-Zionist and antisemetic tendencies (it is rather easy to conflate these two things, and i don't know any political party which is good a finese) But understanding their violence and condoning/appreciating it are completely seperate. Hamas is popular because their supporters think they are their best alternative. Is it any wonder? Do you think most prison inmates like their warden? And i would like to see Israel tried for war crimes - and change it's policy (but that's about as likely as Hamas changing it's chater, supporting a two-state solution, and recognisin Israel - though nobody, anywhere recognises Israel's 'right to exist', that is not something states do...)