Hundreds of activists have staged the 'Chalo Chipko' (let's hug trees) agitation in the Mutha riverbed in Maharashtra's Pune city to protest the felling of trees for the ambitious Pune River Front Development project. During the agitation held on Saturday, the protesters carried placards, shouted slogans to save the river, trees, and the city, and hugged the trees along the riverbank while forming a human chain.