Heston not only did that, but also he held a similar rally for the NRA in Flint, Michigan, after a little 6 year-old girl was shot in her classroom. He also held a rally after another school shooting somewhere. The only thing the guy cared about was protecting his beloved weapons culture by drawing in people after disasters such as school shootings.
I will certainly not hope he rests in peace. More like rest in torture, or something such as that. RIT Heston.