SAN FRANCISCO, Calif. — The FBI San Francisco office is launching a publicity campaign to encourage the victims of hate crimes to come forward. Federal officials announced Thursday that the bureau placed an ad on a city train that reads “Speak Up, Be Heard, Report Now. Report Hate Crimes to the FBI.”

It also launched a social media campaign that includes the photo of an elderly Asian woman and a message that reads, “Did you know many hate crimes are not reported? The FBI wants to help but we need to hear from you.”

The FBI’s efforts come amid a wave of attacks against Asian Americans — many of them elderly — in San Francisco and across the country.