They're not the same at all. Pamela Geller had been warned not to do that as the Florida Pastor a few years before who wanted to burn the Koran had been also. Trump was being interrupted at his rallies in ways that Cruz, Kasich, and Rubio weren't. The protesters at Trump rallies started it, because they didn't like the things that he was saying. Ted Cruz, Marco Rubio, and John Kasich sided with the left. They would be similar to the people who blamed Sarah Palin for the Gabby Giffords murder spree.
