i hate my husbands alt-right friend

my husband has had the same group of friends since childhood and they are GREAT people. i love their wives and their kids and social gatherings are always fun.

but he has this one friend that ive never met in 5 years. they used to work together. i get the worst feeling about the guy. he sends my husband pornographic images of women. he sends him every racist, alt right meme he sees on facebook. he constantly texts him “im cumming”

(yes, i know this bc i looked at his phone. we dont have passwords. he can look at mine. i talk to my friends and family via text the same way i would in person.)

my husband does not send back porn. or leud talk. but he does forward the trump supporting memes, pro gun stuff and typical right wing things. it bothers me bc he is not like this with me or any of his other friends. hes basically an entirely different person, someone that i dont like. i dont care where hes politically aligned, as long as its for good reasons he can justify w himself. racism and other things will not be tolerated by me. this so called friend is racist and crude and i get really bad vibes.

what do i do??