The Antisocial Socialist

ok, if we want to eliminate attacks by foreigners, then I guess it's more like

Right-wing Christian (or non-specific religion): ~200
Right-wing Islam: ~20
Left-wing (all or no religion): ~0

And yes, if you go back to the 60s and 70s, the left-wing body count goes up to maybe 20 or so. The right-wing body count would need to be adjusted upward at least as much, though. And while the left-wing groups were extremists acting against the wishes of the broader left, most of the right-wing attacks were with the active support of the local conservative establishment (police, mayors, etc.) that saw universal suffrage as a threat to their power, to be stopped by any means necessary.

Right-wing generally means in favor of a stratified society and strong support for traditional values. I'd think any Muslim advocating for redistributing the wealth of the rich and permitting lesbians to marry would be considered leftist. On the other hand, Al Qaeda supports a harsh traditional theocratic rule, more extreme but very similar to policies advocated for by the christian right in the U.S. As for stratified society, I have heard nothing in their propaganda or actions that suggests they want to lessen stratification. And their hierarchical, anti-democratic system of government would certainly cement economic stratification.

Why focus on body counts? In the U.S. bodies we take our corpses very seriously. If somebody kills somebody, it gets counted. And it's hard to argue about how severely someone was killed.

Now, vandalism, threats, waving signs, etc. That's all open to subjective interpretation and really the historical and cultural context means quite a lot. If the KKK has just brutally killed a couple voting registration activists in town and someone one night hangs a noose in the tree outside the house where you and your wife and kids live, that's a pretty serious big deal - you'll probably leave town that day. If someone emails a picture of a noose to Obama, I think we can agree it's less of a big deal.

Likewise, with animal rights activists. How many people have animal rights activists killed in the past 20 years? None. How many people have anti-abortion activists killed in the past 20 years? Nine (see wikipedia). Sure, we can quibble about how serious various death threats or rocks through windows are, and we can quibble about rock counts, but there's no way to get an objective comparison.

Bodies, on the other hand, get counted. There are nine people who had a gun pointed at them by anti-abortion activists, the killers pulled the trigger, the guns fired, the bullets ripped through them, and they ceased to live as a result.

As far as I know, and correct me if I'm wrong, but in the past 20 years in the U.S., that has never happened with an animal rights activist. And I think the same is true of Communists of various stripes. The same can't be said for neo-nazis.