WASHINGTON—Very few cars were seen on the streets in the center of D.C. on Sunday morning, and only a few pedestrians, runners, and bikers were around. Street and Metro rail closures ordered in preparation for the presidential inauguration on Jan. 20 kept the city streets mostly empty. Those who ventured out were taken aback by what they saw. “It feels like a military state or just like living in extra lockdown,” said Brian Broderick, a Washington resident who was walking his dog near the Smithsonian on Sunday morning. He added that the security fences that had been erected reflected the divisions in society and, in some way, also “influence and reinforce” those divisions. “It’s really tragic that we can’t find ways to engage in politics more civilly than this… All these fences, all of this equipment and gear to protect us from each other is pretty pathetic… Even if you …