article_snippet.sent: Capitol Police Chief Kim Dine said a man had a backpack and a rolling suitcase, triggering an hours-long lockdown, and a sign that said something about 'social justice.'
article_snippet.sent: Witness Robert Bishop told CNN it said something about taxing the '1%.'
article_snippet.sent: A man carrying a backpack and rolling suitcase shot a man while carrying a sign about taxation.
article_snippet.sent: Witness Robert Bishop said another witness told Witness Robert Bishop and a police officer that the man who killed the man who killed himself held up a protest sign about taxation just before pulling the trigger.