Text messages sent by Homeland Security agents before and during the Capitol attack on Jan. 6, 2021 have given a never-before-seen glimpse at law enforcement’s reaction to the events of the day. The messages were handed over after a lawsuit was filed by the Citizens for Responsibility and Ethics in Washington, the watchdog group announced Wednesday. The internal messages sent by members of the Federal Protective Services, which is a part of the department, show that advance warning that there could be trouble was received three days before the riot. “There will also be marches to the Capitol t…