That's a good challenge to seek out 'inhumane activity' or "acts of violence or aggression". Unless you couent the return of Christ Himself, where he actually carries out the annihilation of the armies of men, probably Chinese/Arab/Soviet troops, who gather in the Valley of Hinnon, or Meggido.
Rev. 19:11-21 IS QUITE SAVAGE AND BLOODY. Heaven itself invites all carrion birds to come and gorge themselves on the flesh of the enemies of his earthly authority and his name. Its safe to assume that many of them will already have been slaughtered in the events of this confrontation; before Jesus appears on his horse with the saints and kills the rest. Its best for 'heathens' and saints to remember God kicks a little "u-kno-what" too.