Thats an unfair assesment, though there is valid room for criticism here.
First off to be clear, they labeled certain **groups** as violent extremists, they did not label anti-fascists and anti-racists collectively as extremist and violent.
I also find it misleading that the screenshot presented **intentionally** left off the one part of the page where they go out of their way, and even put it in bold, to indicate that not all people who use those symbols are violent.