It's easy how to identify tares, they who condemn or curse each other is the tares as since beginning God never condemn his own creation (Genesis 3:17-19; Matthew 21:18-20; James 3:7-12). God always tried to spare and full of mercy to rebelious men, but mankind is not same with God and never will as men always condemn each other.
Men ways prefers "Eye for an eye, Teeth for teeth" since beginning of time, similar with all men prefers Barabbas than Jesus and it still factual until today.
Tares are those who call themselves Jews, when they are not. Today these, so called Jews, are found all over the world. Many are rich and in American politics.
Rev2:9 I know thy works, and tribulation, and poverty, (but thou art rich) and I know the blasphemy of them which say they are Jews, and are not, but are the synagogue of Satan.
Rev3:9 Behold, I will make them of the synagogue of Satan, which say they are Jews, and are not, but do lie; behold, I will make them to come and worship before thy feet, and to know that I have loved thee.