YOU SAID:
Criminals are a cowardly, superstitious lot.
INTO JAPANESE
犯罪者は卑怯で迷信深い人が多い。
BACK INTO ENGLISH
Many criminals are cowardly and superstitious.
INTO JAPANESE
犯罪者の多くは臆病で迷信深いです。
BACK INTO ENGLISH
Many criminals are cowardly and superstitious.
That didn't even make that much sense in English.