Nowadays you can't talk about anything without being labeled as dangerous and someone being offended. Worked with a guy that was always too excited talking about shootouts. He is the kind you keep an eye on even if he's on your side.
I try to limit my political and gun talks to people I know.
Karcher brand are pretty good for home use. Look at the PSI and if available to attach different nozzles. If it doesn't have a foam nozzle see if they sell one by the brand you're looking into or if it's compatible.
edited for spelling
I hand wash with ONR and a lot of good microfiber towels. If it's very dirty, I'll use the self service pressure wand car wash to blast the dirt off then go home and hand wash.