When wealthy people move into low-income working-class neighborhoods, the resulting class conflict sometimes involves vandalism and arson targeting the property of the gentrifiers. During the dot-com boom of the late 1990s, the gentrification of San Francisco's predominantly working class Mission District led some long-term neighborhood residents to create what they called the "Mission Yuppie Eradication Project". This group allegedly destroyed property and called for property destruction as part of a strategy to oppose gentrification. Their activities drew hostile responses from the San Francisco Police Department, real estate interests, and "work-within-the-system" housing activists.