What you said is actually quite interesting, though I still disagree with the notion that Israel isn't apartheid.
Notably, the existence and extremely awkward handling of the border fence, and the fact that Palestinians that lived (or whose relatives lived) in the area Israel occupies before the state was created have dozens of permits governing their lives there, while Jews have virtually none (at least in terms of moving). The latter part makes it different than just a straight-up border, like what Trump planned during his campaign.
Not to mention, it proclaims itself as a 'Jewish state' and has various systems that privilege Jews more than anyone else. Other than maybe Voter ID and Affirmative Action (and even then those don't even count in my opinion), where did the US government do similar actions past Jim Crow? Not much as far as I'm aware.
I know I keep bringing up the US, but its likely the best comparison to Israel, and even then, the US treats Native Americans far better than Israel treats Palestinians.
Zionism is basically the same thing that groups like ISIS/DAESH want to do and the same thing that white nationalists want to do: Creating a state meant exclusively for one group of people whilst treating those outside that group like trash in order to get that goal.
(
Here's where I got a lot of that by the way if you're curious)
Granted, a lot of the claims that this attack was at least partially Zionist influenced mainly come from the fact that major people who happen to be Zionist Jews are supporting this and similar future actions. You can probably tell how reliable that claim it just by reading that previous sentence.
Now, will that out of my chest, speaking of white nationalists:
They recently started a Twitter hashtag campaign about wanting to kick Jared Kushner (a huge supporter of toppling Assad) out of the White House, and also due to conflicts between him and Stephen Bannon (who greatly opposes toppling Assad). It reached 75K tweets last time I checked, and while it didn't do much, there will be a meeting between Bannon and Kushner discussing this problem.
An anti-war protest is also going on right now not just in the US, but also in the UK. The one is the US is being counter-protested by Antifa.