Clashes at far-right protest mar Portugal's Revolution Day

People gather in Rossio square during the commemorations of the 50th anniversary of Portugal's Carnation Revolution that resulted in the overthrow of dictatorship and transition to democracy, in Lisbon, Portugal April 25, 2024. REUTERS/Pedro Nunes

LISBON (Reuters) - Portuguese riot police detained several ultra-right protesters on Friday after clashes in downtown Lisbon marred celebrations of the 51st anniversary of the Carnation Revolution, which ended a fascist dictatorship.

Extreme-right groups such as Ergue-Te (Rise Up), Habeas Corpus and Grupo 1143 had called a rally, which city authorities banned, to protest ahead of next month's parliamentary election against growing numbers of immigrants.