Early reports suggested success: undocumented immigrants appeared to flee Alabama en masse.
In other words, the non-Muslim minorities are leaving (and sometimes being pushed out) en masse.
Boehner then took the oath of office before administering it, en masse, to the rest of the House.
But what political price is there to pay for en masse targeting of politically unempowered minority groups?
The Internet cool kids are, of course, rallying against Swift en masse.
Because the flappers had been gossiped about en masse, the whole reason for not being gossiped about had ceased.
There was a roar of protest from the Club members, en masse.
You are supposed to have escaped, en masse, from your keepers.
I dodge discrimination, and characterize them en masse by negations.
Events had crowded too thickly for her to grasp the whole; but en masse the effect had been definite—startlingly definite.
French, literally "in mass."