YOU SAID:

Let's go beat up a child

INTO JAPANESE

子供を殴りに行きましょう

BACK INTO ENGLISH

go beat the kid

INTO JAPANESE

子供を倒しに行きます

BACK INTO ENGLISH

go kill the kid

INTO JAPANESE

子供を殺しに行ってください

BACK INTO ENGLISH

go kill a child

INTO JAPANESE

子供を殺しに行く

BACK INTO ENGLISH

go kill a child