A phrase much used in political circles in this country is "playing into the hands of". It is a sort of charm or incantation to silence uncomfortable truths. When you are told that by saying this, that or the other you are "playing into the hands of" some sinister enemy, you know that it is your duty to shut up immediately.

"As I Please," Tribune (9 June 1944) - "As I Please" (1943–1947)