"Are the immigrants to my country from (COUNTRY) more likely (on average) to commit [1] a crime than the general population" is a very different question than "Is every immigrant from (COUNTRY) dangerous"
The latter is bias, because if you meet a person you should judge them by their own merits, and not by the ethnic/social slides they belong to.
[1] Or rather, be sentenced for a crime, some we're talking about statistics.