BUCHAREST, Romania—Several hundred Romanians, including many families with young children, protested Saturday in the country’s capital against measures to curb the spread of coronavirus, especially social distancing and the mandatory use of masks in schools.

A man shouts slogan against the use of face masks as a means of protection against the COVID-19 infection during a protest in Bucharest, on Sept. 19, 2020. Vadim Ghirda/AP Photo