President Donald Trump kicked off an unprecedented military-style parade in Washington, D.C. —commemorating the U.S. Army’s 250th anniversary and his 79th birthday—as millions across the country took to the streets to protest him, rallying against his expanded immigration raids and a spending bill projected to slash healthcare access for millions.

The massive military parade that President Donald Trump has long wanted is set to step off from the Lincoln Memorial on Saturday evening, with tanks, bands and thousands of troops. And the biggest question marks are whether it will be overshadowed or delayed by either the weather in Washington or planned protests elsewhere around the country.