Several groups within the patriot movement have committed or endorsed violence, with U.S. law enforcement agencies labelling some groups "dangerous, delusional and sometimes violent." The ADL and "The American Scientific Affiliation" has noted that groups often have connections to white supremacy, however, their connections to it have shrunk over time due to their recent inclusion of non-white members. Major events in America which alarm or inspire the patriot movement include the 1992 Ruby Ridge siege, the 1993 Waco siege and the 1995 Oklahoma City Bombing. The Southern Poverty Law Center (SPLC) found that the economic decline and nomination of Barack Obama in 2008 caused the movement to "come roaring back", after declining from 800 groups in 1996 to less than 150 groups in 2000.