Croatia remembers tens of thousands of victims of WWII-era concentration camp / French authorities clear migrant camps along Seine in Paris / What these murders have done is heighten tensions in migrant camps / Ukrainian forces create concentration camps in Russian border areas -- diplomat / Russian MFA says Ukraine set up 'something like concentration camps' in Kursk Region / Memorial opens on site of Nazi concentration camp for Roma after communist-era pig farm removed / Paris migrant camps evacuated as organizations denounce 'social cleansing' ahead of 2024 Olympics