The time when Jesus(Peace be Upon Him) descends on earth and leads an army to triumph over the evil doers lead by the anti Christ. That will be the time, as you described, that the good will indeed, as a unified team, dispel of those who commit atrocities.
When will be that time is of course not disclosed to us, but judging by the events that are occurring today, it cant be too long away!
And God does promise those who work towards this, ie removing and destroying evil,with success and repute in this lifetime itself, and also warns those who do otherwise with humiliation and turbulence. And these verses are found time and again in the Quran.