Republican President Donald Trump returned to Iowa today to deliver a speech focused on energy and the economy, but recent shootings by federal officers in Minneapolis have overshadowed the event. Protesters gathered in a designated "free speech area" outside of the event venue starting Tuesday morning. The crowd swelled to more than 2,000 before Trump arrived for the afternoon speech. Follow more live coverage of protests and Trump's speech: https://www.desmoinesregister.com/live-story/news/pol