Definition of subhuman: less than human: such as
a :
failing to attain the level (as of morality or intelligence) associated with normal human beings
b : unsuitable to or unfit for human beings subhuman living conditions
c : of or relating to a taxonomic group lower than that of humans the subhuman primates
People such as the ones shown in OP's video obviously lack the morality and intelligence associated with normal human beings. So yes, they're subhuman. There's nothing lunatic about calling a spade the textbook definition of what a spade is.
I do like how you try to personally attack me rather than acknowledge the violent, terrorist actions being done by these violent domestic terrorist groups. You apologists crack me up sometimes