Checked the last one and at least this doesn’t seem to be true.
https://en.wikipedia.org/wiki/Jared_Lee_Loughner#Views_on_politics
“Records show that Loughner was registered as an Independent and voted in 2006 and 2008, but not in 2010.”
The Lanza family themselves weren’t political, and Adam was too young to register. His files and writings (Of which there were few) don’t reflect any knowledge of or opinion on the political landscape.
Lanza played video games. That is the whole of his being. That’s all he did.
Except that Loughner was close to that Sheriff and that Democrat family kabal that hovered around Gifford. Also a Republican judge got killed.