Thousands of Cubans took to the streets in multiple Cuban cities on Sunday to protest its communist dictatorship and demand its end.

CBS Miami reports that civil unrest has boiled over due to the COVID-19 pandemic, with protestors chanting “we are not afraid” as they called for more food and vaccines.

“We are not going to hand over the sovereignty or the independence of the people,” said Cuban President Miguel Diaz-Canel in an address to his citizens. “There are many revolutionaries in this country who are willing to give our lives, we are willing to do anything, and we will be in the streets fighting.”

The Miami Herald reports that Cuba is in the midst of its worst economic contraction since the end of the Cold War. They attribute “chronic inefficiencies” and “paralyzing bureaucracy” decimated essential food and agriculture sectors. Rising inflation have also led to long lines for food.

Sanctions from the Trump administration reduced Cuba’s access to foreign investment and remittances that exacerbated fiscal realities exposed further by COVID-19.

“We’ve never seen anything like this before,” Republican Representative María Elvira Salazar wrote on Twitter. “The Cuban people are determined to be free.”

“Tens of thousands of people are protesting at this very moment.”

“The regime is shutting off the internet on the island,” she continued. “The Castro dictatorship doesn’t want the world to see what’s happening.”

Republican Senator and Cuban-American Marco Rubio, also took to Twitter, writing, “Frustration with the dictatorships incompetence, greed and repression is mounting rapidly.”