We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
For the sake of clarity only.
What you see in the video is a pyroclastic flow, much different in character from a lahar. A lahar is like a river of concrete - it is a mixture of ash, pumice, etc., and melted ice, snow, or rainwater; ground hugging and mostly restricted to established flow channels, though, if of sufficient size, they can overwhelm entire towns(see Armero, I believe it was). Yes, under certain conditions they can scald, but you're more likely to be buried and suffocated. Pyroclastic flows are incandescent(look for videos of them at night!), fast moving mixtures of ash, hot toxic gases, and pulverized rock which can have internal temps in hundreds of degrees Centigrade and higher, can and do flow up and over ridge tops in their immediate path, can have speeds much in excess of lahars, and burn you to death, up to and including incineration. Death by volcano in either case; one of these things is not like the other...
Pyroclastic flows are really interesting....they travel in the hundreds of mph and can travel remakable distances over water on a layer of superheated steam and dust, and as such they are hurtling along on a nearly frictionless cushion. The pyroclastic flows from the Krakatoa super-eruption in 1883 travelled over 30 miles to reach the Sumatran coast.