YOU SAID:

Humans brutally kill because they are humans.

INTO JAPANESE

彼らは人間であるため、人間は残酷に殺します。

BACK INTO ENGLISH

Because they are humans, humans kill them cruelly.

INTO JAPANESE

彼らは人間なので、人間は彼らを残酷に殺します。

BACK INTO ENGLISH

Since they are humans, humans kill them cruelly.

INTO JAPANESE

彼らは人間なので、人間は彼らを残酷に殺します。

BACK INTO ENGLISH

Since they are humans, humans kill them cruelly.