fear? >> yeah. you stay inside. >> reporter: i see the camera up there now. >> to protect. nighttime, really just scary. >> i'm so sorry this happened, mr. chang. >> thank you. yes. >> reporter: almost five months after mr. chang's car exploded, another asian senior appeared to be targeted. >> south bay. someone deliberately torched the cars sitting in a family's front yard. take a look at this. >> reporter: surveillance footage caught a potential arsonist running away as the flames spread. >> the fire department is handling the investigation. >> reporter: so many asian-americans are now afraid to leave their homes. they don't feel safe in their own neighborhoods. but across the country, there are several groups of concerned citizens trying to help.