Recently, FBI Director Christopher Wray spoke on domestic terrorism-related incidents that occurred since October 2018. While speaking on them, he noted that a good portion of the arrests made was related to white supremacy.
During a Senate Judiciary Committee hearing, Wray said: “I will say that a majority of the domestic terrorism cases that we’ve investigated are motivated by some version of what you might call white supremacist violence, but it does include other things as well."
He also said “In terms of number of arrests, we have through the third quarter of this fiscal year had about give or take 100 arrests on the international terrorism side, which includes the homegrown violent extremism. We’ve also had just about the same number—again, don’t quote me to the exact digit—on the domestic terrorism side.”
source: The Hill