Despite frigid temperatures, thousands of Americans showed up Sunday on the National Mall in Washington, D.C., to voice strong opposition to COVID-vaccine mandates. “Every time you comply, you get weaker,” said Robert F. Kennedy Jr., a featured speaker at the “Defeat the Mandates” event. “Every time you say ‘yes,’ you’re getting pushed back to a weaker position.” “The hill that you’re going to die on is the hill you’re on right now,” he said, “and they’re coming for our children.” Kennedy hammered the companies that manufacture the experimental vaccines being mandated in many locations worldwide, with no legal liability. “You...