I'll second that ...Well maybe not to you, but lately I've felt annoyed with some of the hostile responses that I've been getting as well as responses others have been getting. I'm a pretty thick skinned person, but after awhile it just becomes annoying.
Any of these types of events makes me think about what could happen in public, but it isn't practical to be afraid. With so many school shootings I wouldn't be able to do my job if I hid out. I am hopeful that people are generally good people but I try to stay alert just in case.