For the record, she wasn't purposefully "bulldozed." Even her peacenik cohorts-in-crime say the bulldozer driver didn't kill her on purpose.
Now . . . using your logic, it's okay for a demonstrator, any demonstrator -- regardless of their cause or beliefs -- to protest with impunity. Have I got that about right?
Okay, let's say protestors don't like taxis. So they can block every taxi in New York City while society is to treat them like pampered, endangered creatures?
Airplanes? No problem, the anti-airplane goons can stand in front of every prop in the U.S. and the pilots are expected to turn their engines off and sit idly by.
Civil protests carries responsibilities and costs. If you're not willing to pay the price for your actions, especially when the slightest of accidents might kill you, then perhaps you'd be better served writing a Letter to the Editor instead of playing chicken with a bulldozer.