Native American groups are protesting President Trump's Fourth of July celebration at Mount Rushmore on Friday, and some are even calling for the removal of the national monument.

Fifty years ago this summer, the sounds of protest were also ringing through the Black Hills of South Dakota. In 1970, a group of Native American activists scaled Mount Rushmore and occupied it for months to demand the land be returned to the Sioux.

As Americans celebrate Independence Day, a group of artists and activists are flying pro-immigrant, anti-incarceration messages in the skies. They hired fleets of airplanes to sky-write their slogans over 80 locations, including immigration detention facilities, jails, courts and the U.S./Mexico border.

Audrey just turned 18 and relishes crossing into adulthood: She voted for the first time this year, graduated high school and is college-bound next month. The honors student typically wakes up "a bundle of nerves," she says, which had fueled her work volunteering, playing varsity sports and leading student government.

But for years, she also struggled with anxiety, depression and obsessive compulsive disorder — all of which drove her to work harder.