are they knave ?

Since young , we 've been infuse that foreign ( labors) are knave .

Can't deny that some of them really bring troubles , crimes increase & competition of getting job .
I still feel pity on them , they came to our countries , working so hard .
They just work for life , work to support they family .

I could see almost every week , the company that I 've training employ loads of foreign .
Their working time is from 830-630 and sometime they even request to have Over Time until 10 or 11 pm ++to earn more .
And the bad merchant still wanna cut off their salary : P