Make this more neutral: in germany, about 10,000 witnesses were imprisoned, including 2000 sent to concentration camps, where they were identified by purple triangles; as many as 1200 died, including 250 who were executed.
in germany, between 6,000 and 10,000 witnesses were imprisoned, including 2000 sent to concentration camps, where they were identified by purple triangles; as many as 1200 died, including 250 who were executed.