Video footage released Wednesday of the January attack on the Capitol shows the moments when rioters appeared to spray an unknown substance at Capitol Police Officer Brian D. Sicknick, forcing him to retreat behind police lines.
Sicknick, 42, was among the vastly outnumbered officers attempting to hold back a violent crowd on the west side of the Capitol at around 2:30 p.m. Jan. 6. He died the next day of natural causes, officials said, and has been hailed as a hero.