TBILISI (Reuters) - About 50,000 protesters marched peacefully through the streets of the Georgian capital on Saturday, Reuters witnesses said, in a fresh show of opposition to a "foreign agents" bill critics say is inspired by one in Russia that has been used to clamp down on dissent there.

The rally came a day after Georgian Prime Minister Irakli Kobakhidze said the government would push ahead with the bill despite opposition from what he cast as "misled" youngsters who feel resentment towards Russia.

(Reporting by Felix Light and Gleb Stolyarov; Writing by Elaine Monaghan in Washington; Editing by Emelia Sithole-Matarise)