Protesters chanted against Lukashenko as they marched through the capital and other cities decked out in red-and-white opposition colours. At least 53 people were detained, human rights activists said.
Some dubbed the protest a "people's inauguration" of Sviatlana Tsikhanouskaya, Lukashenko's main opponent who fled into exile after the Aug. 9 election that Lukashenko's opponents say was blatantly rigged to hand Lukashenko a sixth term.
Lukashenko denies electoral fraud and was inaugurated on Wednesday in a ceremony held without any prior announcement, sparking more protests and condemnation from the European Union, the United States and Britain.
[INDISTINCT CROWD CHATTER]