Social media companies bent their own rules in favour of former President Donald Trump and his supporters in the volatile weeks preceding the 2021 attack on the US Capitol, according to an unpublished staff report from the House’s Jan. 6 committee.  The 122-page “Summary of Investigative Findings,” which was obtained and posted by the Washington Post, analyzes testimony from employees and documents received from tech companies including Twitter Inc. and Meta Platforms Inc. It details how the companies failed to adequately address the calls to violence and election-related conspiracy theories circulating online after the 2020 presidential election.