Threats of a March 4 attack create disruptions but little trouble. Researchers say police overreacted. Craig Timberg and Drew Harwell, The Washington Post March 4, 2021 FacebookTwitterEmail As Congress canceled a hearing amid reported threats to the Capitol on Thursday, researchers who had warned of trouble ahead of the Jan. 6 siege found themselves scratching their heads. If something was brewing, they said, it was much smaller, quieter and less obviously violent than what they had reported two months ago - when they had struggled to get authorities to take their warnings seriously. That contrast was even more startling as Thursday proceeded with few signs of trouble, and a sunny Washington D.C. eased into spring-like bloom. The Capitol grounds remained quiet behind black metal fences guarded by heavily armed troops.