I don't have much to say about this, but somehow I've been talking about it most of the day. Lone Wolf terrorists have two quite distinct profiles. Most of them are white supremacists with criminal histories that built ties to criminal organizations like the Aryan Brotherhood. I'll bet the LA case turns out that way. The rest are Islamic supremacists with ties -- sometimes merely sympathies -- with terrorists. The Orlando shooter was clearly one of these.
These are solvable problems, but only if we square up on what we're dealing with. It's two separate, similar, supremacist problems. Neither "all gun owners" nor "all Muslims" nor "all white people" are the problem. It's a narrow, easily targeted selection of folks who cause almost all of these issues.