Translate the following English sentence to French:
"How should we describe the sinister filtration camps, which are comparable to concentration camps, in which the population is suffering the most dreadful humiliation and from which able-bodied men between 15 and 65 years old rarely get out alive?"
Comment faut-il qualifier les sinistres camps de filtration, assimilables à des camps de concentration, dans lesquels la population subit les pires humiliations et d'où les hommes valides de 15 à 65 ans sortent rarement vivants ?