That headline came from a left wing source, but checks out on Fox News and The Blaze and FBIU press releases. Must be fake since Trump hasn't commented on Twitter.
https://www.huffpost.com/entry/fbi-warns-of-armed-protests-at-all-50-state-capitals-in-lead-up-to-inauguration-day_n_5ffcb08dc5b63642b6fe2836
Can somebody please go to a real news source like QAnon before people start taking it seriously?