Thanks alot for all the info guys. I'll take a watch first, but based on what you all have said, I won't let him watch it.
I think it really depends on the kid. The violence is brutal, but quick, for the most part, but I definitely recommend vetting the series, because there are a few strong, drawn out, and very violent confrontations that you'd probably be better off skipping with an 8 year old (particularly in episodes 4 and 8). Outside of that, how do you feel about language? There are a lot of "b**ches" and "d*cks," and the like, but there are no "F-bombs" or "C-words," as they say, and there's no sex or nudity of any sort.
The other thing to keep in mind is about his attention span. There are a surprising amount of subtitled sequences. Chinese, Japanese, Spanish, Russian, and even Braile!
It's no problem for an adult, but is that something you can see your son following regularly? All in all, I think it's an awesome representation of the seedier side of the MCU, and, as a whole, it's definitely a show for adults, but I think that, depending on your sensibilities, you could probably "edit" down the more gratuitous sequences, and make it, at the very least, "safe" for a child.