Members of both parties join in a moment of silence for activist Charlie Kirk on Capitol Hill. In a statement the Secret Service reassures the American public that the president has the highest level of protection. Mary Bruce reports. https://abcnews.link/eVs73WM?utm_source=facebook&utm_medium=social&utm_campaign=dhfacebook&utm_content=app.dashsocial.com/abcworldnewstonight/library/media/581085304 | ABC World News Tonight with David Muir