PHILADELPHIA - Philadelphia Police Commissioner Danielle Outlaw on Wednesday said her department is investigating "several incidents of hateful and racist vandalism in Chinatown and South Philadelphia," amid reports of a national rise in hate crimes against Asian-Americans. "This national and local surge in racist rhetoric & acts of violence will not be tolerated," Outlaw said in the first of a two-part tweet. "We denounce acts of hate targeted towards individuals and groups based on their race, ethnicity, religion, or national origin."Outlaw did not provide details about the cases being investigated by the Philadelphia Police Department.