https://www.earthcam.com/usa/dc/capitol/?cam=dc_capitol
Lots of flashing lights all the way to the right of the screen? Not sure where that would be.
Also https://twitter.com/1Gotime/status/1351036163478478849?s=20
All National Mall cams are out?
Are there any other feeds to check?
https://www.senate.gov/general/capcam.htm