Global protests against economic injustice gripped cities over the weekend, predominantly on Saturday, October 15. Solidarity with Spain's "Indignants" and New York's "Occupy Wall Street" protesters brought demonstrations over the concentration of wealth in the hands of a few and the worldwide economic crisis to cities from Hong Kong to Tulsa. Hundreds of thousands joined the mostly peaceful demonstrations, although arrests were made in many cities, and clashes with police in Rome became particularly violent. The movement shows no signs of slowing. Gathered here are images from cities large and small. -- Lane Turner ( 40 photos total