Start Of Carnival Women's Day In Cologne Amid The Warning Of Terror Attack

carnival cologne deutschland germany karneval koeln nur photo security terror threat women's day ying tang yingphotography anti-terrorism security barrier Severin Tower carnival woman's day festival Cologne Germany February 27 2025 terror attack warning Ying Tang NurPhoto festival security public safety protective measures event security threat alert crowd protection urban safety festival preparations emergency response security protocols terrorism prevention public event cultural festival security installation safety measures festival attendees security alert threat prevention event safety public gathering security planning.