Anti-Muslim protesters marching in Lower Manhattan Saturday were met by a larger group of counter-protesters who drowned them out with chants of their own. The two sides faced off in Foley Square, where ACT for America, a lobbying organization opposed to Muslim immigration, organized a “March against Sharia” — part of a series of nationwide marches the group organized Saturday.About 100 demonstrators carrying signs with anti-Islamic slogans — one reading simply “NO MORE MUSLIMS” — shouted against Sharia law, which ACT for America argues is threatening the United States. The organization is designated by the Southern Poverty Law Center as an anti-Muslim hate group.