I would beef up security and go on with the show. Do you remember the violence during Trump’s inauguration? Somehow he wasn’t affected by it. There is a way to create a shield without 30000 troops installed. Either we have to admit that security forces are inept and can’t determine when an attack will come (as they claimed were possible)and need brute force or see the military response as unjustified, alarming and perilous to this tattered democracy.