Transgender woman Johanna Metzger was stabbed to death in Baltimore Saturday, making her at least the sixth trans American to be murdered this year.Metzger, from Pennsylvania, was staying at a recovery center in Baltimore, TV station WMAR reports.Her death was announced by local LGBTQ center Baltimore Safe Haven and by Baltimore City LGBTQ Affairs, a division of the mayor’s office.“We are heartbroken to report another trans woman has lost her life to violence here in Baltimore,” Baltimore City