I'm quite convinced neither you, GrannyGravy13 nor many who voted that way, voted consciously for such things as modern slavery. Nor, I would guess, were most of those voting for Trump of Farage, or the (very) far-right figures in any country.
However, the people trying to gain power through such votes have shown themselves, little by little, to be like-minded in their views of extreme capitalism.
These people follow the "law of the jungle", where there are no rules or regulations, and survival depends solely on strength, cunning, or competition. The most extreme views of such people suggest a belief system which endorses a competitive environment where businesses or individuals act ruthlessly, with little regard for social welfare, ethics, or regulation.