Patch.com is reporting New York is ranked fourth in the country for the number of hate groups operating within its borders, according to the latest version of the Southern Poverty Law Center's Hate Map released last week. The center tracked more than 900 hate groups nationwide last year. In New York 47 groups were identified, including four groups on Long Island: Two chapters of the Ku Klux Klan, a racist music production company and an anti-Muslim group. The Center also named a black separatist group headquartered in Mount Vernon. The list was complied using information from the groups themselves, as well as police and media reports from around the country. The number of hate groups in the U.S. peaked in 2011, when the Southern Poverty Law Center tracked just over 1,000 groups. The number of groups the Center tracks has more than doubled since 1999. Read the full story at Patch.com.