Health experts worry COVID-19 cases could rise because of the reopening of restaurants and businesses, as well as large gatherings that are part of nationwide protests. Epidemiologist Perry Brown is a professor at Florida A&M University. He says a spike in positive coronavirus cases around the country is likely to happen.

“I would love to be wrong because the outcome would be the best outcome but again my fear is that some of these things that are happening now with both the relaxation as well as the mass gatherings will contribute to a second wave,” Brown said.

The plaza between St. John's Church and Lafayette Park was full of people nonviolently protesting police brutality late Monday afternoon when U.S. Park Police and National Guard troops, with the use of tear gas, suddenly started pushing them away for no apparent reason.

With everything going in the country — from the unrest in many cities after the death of George Floyd at the hands of police to the ongoing coronavirus pandemic — it's easy to have missed that there are elections being held.

But several states have primaries up and down the ballot: Indiana, Iowa, Maryland, Montana, New Mexico, Rhode Island, South Dakota and Washington, D.C.

Pennsylvania is holding primary voting on Tuesday, though Gov. Tom Wolf extended the deadline for voting by mail one week, until June 9.

Updated at 9:31 p.m. ET

Escalating his rhetoric during a period of roiling national crises, President Trump on Monday threatened to deploy the U.S. military to cities or states that don't take "necessary" actions to halt violent protests, saying the armed forces will "quickly solve the problem for them."

Trump's Rose Garden remarks came as just across the street, law enforcement officers deployed tear gas and shot rubber bullets to forcefully disperse peaceful protesters. Washington, D.C., had set a curfew Monday of 7 p.m. ET.