The legislation establishing it directed the committee to report on the entire set of "facts, circumstances, and causes" surrounding the January 6, 2021 attack on the Capitol.
The January 6 committee report contains extensive documentation of forewarnings of violence that were percolating up from confidential sources, open-source analysts, and senior officials.
On January 4, Senator Mark Warner, chair of the Senate intelligence committee, called the FBI's deputy director with his concerns.
As the committee notes, a threat analyst noted a "tenfold uptick in violent online rhetoric targeting Congress and law enforcement."
Looming over the January 6 committee's report is the report by the 9/11 Commission, which was far from perfect, but much more comprehensive and unsparing.