HAVANA — Large contingents of Cuban police patrolled the capital of Havana on Monday following rare protests around the island nation against food shortages and high prices amid the coronavirus crisis. Cuba's president said the demonstrations were stirred up on social media by Cuban Americans in the United States.

Sunday's protests marked some of the biggest displays of antigovernment sentiment in the tightly controlled country in years. Cuba is going through its worst economic crisis in decades, along with a resurgence of coronavirus cases, as it suffers the consequences of U.S. sanctions imposed by former President Donald Trump's administration.

Many young people took part in demonstrations in Havana. Protests were also held elsewhere on the island, including in the small town of San Antonio de los Baños, where people objected to power outages and were visited by President Miguel Díaz-Canel.

In a statement Monday, U.S. President Joe Biden said Cuban protesters were asserting their basic rights.

“We stand with the Cuban people and their clarion call for freedom and relief from the tragic grip of the pandemic and from the decades of repression and economic suffering to which they have been subjected by Cuba's authoritarian regime,'' Biden said.