Translate the following English sentence to French:
"We call on the people to step up their fight to stop their self-proclaimed saviours trampling on the rights for which they have fought hard and made sacrifices, and to reverse the current trend, which only serves the interests of those who are exploiting them."
Nous appelons les peuples à intensifier leur lutte contre la remise en cause, par ceux qui s' autoproclament leurs sauveurs, des droits qu' ils ont conquis au prix de rudes combats et sacrifices, et d' inverser le cours actuel des choses qui ne sert que leurs exploiteurs.