As a girl, Ma Thuzar Wint Lwin would watch the Miss Universe pageant and wish that she could be the one onstage representing her country, Myanmar. She entered her first two contests last year, nervous and excited about what to expect. But she ultimately walked away crowned Miss Universe Myanmar, and this week is competing at the global pageant in Florida.

But now representing her country has new meaning. With the military seizing power in a Feb. 1 coup and killing hundreds of protesters, she hopes to use her platform to call attention to Myanmar’s pro-democracy movement and to appeal for international help in freeing elected leaders who have been detained.

“They are killing our people like animals,” she said in an interview before leaving Myanmar for the competition. “Where is the humanity? Please help us. We are helpless here.”

In a dramatic moment on Thursday during the pageant’s national costume show, she walked to the front of the stage and held up a sign saying, “Pray for Myanmar.” The final competition will be held on Sunday.

responded with a brutal crackdown, killing more than 780 people and detaining more than 3,900, according to a rights group that tracks political prisoners.

In the early weeks of the protest movement, Ms. Thuzar Wint Lwin, 22, joined the demonstrations, where she held signs with slogans such as “We do not want military government,” and called for the release of the country’s civilian leader, Daw Aung San Suu Kyi, who has been under house arrest since the coup.

black-and-white photos of herself blindfolded, with tape over her mouth and her hands bound.

The military’s onslaught has left the country living in fear, she said.

“The soldiers patrol the city every day and sometimes they set up roadblocks to harass the people coming through,” said Ms. Thuzar Wint Lwin, who also goes by the name Candy. “In some cases, they fire without hesitation. We are scared of our own soldiers. Whenever we see one, all we feel is anger and fear.”

giving up his dream of going to the Olympics and would not compete under the Myanmar flag until the regime’s leader, Senior Gen. Min Aung Hlaing, was removed from power. And the mixed martial arts fighter U Aung La Nsang, an American citizen and one of Myanmar’s most famous athletes, has urged President Biden to help end the suffering of Myanmar’s people.

Ms. Thuzar Wint Lwin says she believes that it will not be safe for her to return to Myanmar after speaking out against the regime; she does not know where she will go after the pageant ends.

An English major at East Yangon University, her path to the pro-democracy movement can perhaps be traced back to her childhood. She grew up in a middle-class household. Like many parents, her father, a businessman, and her mother, a housewife, dared not discuss the military government that was then in power.

One of her early memories was walking with her mother near Sule Pagoda in downtown Yangon in 2007, when monks led nationwide protests against military rule. She was 7. As they neared the pagoda, soldiers broke up the protest by shooting their guns in the air. People started running. She and her mother ran, too.