A portrait of murdered journalist Viktoria Marinova at the Liberty Monument in Ruse, Bulgaria, Oct. 9, 2018. (AP Photo/Filip Dvorski)

A portrait of murdered journalist Viktoria Marinova at the Liberty Monument in Ruse, Bulgaria, Oct. 9, 2018. (AP Photo/Filip Dvorski)

A portrait of murdered journalist Viktoria Marinova at the Liberty Monument in Ruse, Bulgaria, Oct. 9, 2018. (AP Photo/Filip Dvorski)