Answer: There isn't a complete answer except what the bible teaches.
Often they find "fault" with others, when the others do not even understand what they did wrong in the first place. "Psa 35:11 False witnesses did rise up; they laid to my charge things that I knew not. "
They could be "conservative" politically. They could be "liberal" politically. They could be of any nationality or heritage.
Maybe they could be calling themselves Christian and run a fine Church program. Maybe they are not calling themselves Christian and live a lavish life in style and prestige.
Usually, the answer is this: "by their fruits, ye shall know them"
So if they cater to the policial correct crowd, and never speak a word of truth about conditions of men they are not reliant on the first five books of the bible, but the five books of "men" (pride, lust, idolatry, cowardliness, selfish vain glory), there is a huge sign, that something is wrong in their spirit.
Do they believe that all men and women who use doctors are fine people? (2Ch_16:12 And Asa in the thirty and ninth year of his reign was diseased in his feet, until his disease was exceeding great: yet in his disease he sought not to the LORD, but to the physicians.)
Do they believe that all men and women who put up a Christmas tree and Celebrate Easter are fine people? (1Co_10:14 Wherefore, my dearly beloved, flee from idolatry.)
Do they care about the little details in the bible and lifestyle? Like when is the Month of Abib? What is Tish b' Av in the Jewish culture and life? Other little culture details like the names of the month for other cultures? Do they run and hide when the truth is revealed from the Old Testament? What about little truths in the New Testament about whom Jesus loved and whom we are to love?
Overall, they may call themselves GOOD, or select the certain people in their life who call them good....but never check to see if they are good according to the word. They select the "vulnerable" people in the community to be friends while ignoring the "tough" people who question their condition before Holy God. Hence they DO NOT want to be refined in their character.
They could be spiritually abusive and not admit it. They could be quite popular in the community, but inwardly hold grudges when people speak about their own sinful behavior.
We don't really know who is "racist" except under fire and trial. So speak the truth away. Wiiwiisina iwodi (I don't need a pastor for a wedding, a baptism or a funeral........). I only need Great Spirit......Holy Spirit to provide comfort all days.
The father of Noah lived to be 777 years. To a racist person who doesn't agree with scripture as it is written (by years, months, days, hours), they (the racist man) will NEVER allow this truth to be told.
Gen 5:28 And Lamech lived an hundred eighty and two years, and begat a son:
Gen 5:29 And he called his name Noah, saying, This same shall comfort us concerning our work and toil of our hands, because of the ground which the LORD hath cursed.
Gen 5:30 And Lamech lived after he begat Noah five hundred ninety and five years, and begat sons and daughters:
Gen 5:31 And all the days of Lamech were seven hundred seventy and seven years: and he died.
When you are reading the bible consider the TRUE condition of the countries: