Clashes erupted Sunday evening in Beirut between police and protesters trying to approach the parliament building.
Hundreds of protesters, their faces covered with masks in the colours of the Lebanese flag, hurled stones at iron fences and cement barriers blocking entrances to the parliament complex.
A protester said tear gas had been fired.
The demonstrators, taking to the streets for the second straight day, are furious with the country’s ruling elite after a massive blast hit the Beirut port on Tuesday.
Colonel Roger Khoury, the chief of a team of military technicians at the devastated port, said on Sunday that hope of finding survivors at the site had dwindled.