Global Shared Stories - block stories from a user?

I really like the new shared stories view - it’s a nice feed of interesting articles I usually haven’t seen. It’s especially useful when I’ve read all my subscriptions but am bored and want more to read That said, one frustration I have is amidst the good content is the occasional item that is pure nonsense. As much as I like hearing diverse opinions, I don’t need articles that are hateful, racist, or offensive.