I've seen none of what you mention on national media, as I don't watch much of it. I've seen plenty of gun owners on my Facebook feed, now formally on my Facebook feed, foaming at the mouth, and not only insulting the victims, but insulting the intelligence of most anyone with an ounce of empathy and compassion for the loss of human life.
I'm over the BS morons who think a meme is somehow a thoughtful expression of ideas that will contribute to the discussion. They are lasts folks I want representing me in discussions on 2A issuers.
Reality is, if we as gun owners want to have the 2A rights a generation from now, we better pull our collective heads out of our asses and observe what is going on. Ignoring the spotlight events like this school shooting bring to the topic, the demographics and urbanization, gun ownership is going to shrink dramatically over the next twenty years. Don't believe me, go to an NRA national convention, a place with "people watching" opportunities that rival any Wal-Mart, and observe the age and whiteness of the audience compared to society as a whole.
Add issues like these high profile school shootings (and the huge media attention they justify) to the picture of aging/changing US demographics, and the 2A road ahead is going to be a lot rougher than the road traveled the last 100 years. Dumb ass memes on Facebook and similar false equivalencies that might get a laugh from the drinking buddies down at the bar is a short road to a lot more restriction on gun ownership.