Panic buttons installed in Ayanna Pressley’s congressional office were torn out before rioters stormed the Capitol last week, her staff have said. Sarah Groh, who serves as Ms Pressley’s chief of staff, was with the congresswoman when president Donald Trump’s supporters stormed the US Capitol building last Wednesday. She told the Boston Globe that she had reached for the panic buttons installed in Ms Pressley’s office as they tried to barricade themselves in. But, when they went to press panic buttons, Ms Pressley’s staff saw that they weren’t there, and appeared to have been ripped out. “Every panic button in...