Certainly demeanor, clothing and indeed every cultural expression might let us know that someone is trustworthy or not. These are keys that security personnel use to profile those who need to be followed as they enter a store or even police, who both know from experience are more likely to be suspect, at the very least and more often than: the culprit they end up putting into handcuffs. If you hang out with the wrong crowd, you don't only copy their style of dress or demeanor you also tend to commit the sins they love. Now I'm not saying everyone who wears his hat backwards is a criminal, but many who do so are. The large number of blacks populating our prisons isn't simply because they are stopped and questioned by police more often than whites, it is a simple fact that more blacks commit crimes and that's because they aren't doing anything wrong (according to their culture) stealing from 'the man,' or committing other crimes. They're fighting the power.
Whosoever therefore resisteth the power, resisteth the ordinance of God: and they that resist shall receive to themselves damnation.
For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek. For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith. For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness; because that which may be known of God is manifest in them; for God hath shewed it unto them. For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse: because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened. Professing themselves to be wise, they became fools, and changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things. Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves: who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen. For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature: and likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet. And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient; being filled with all unrighteousness, fornication, wickedness, covetousness, maliciousness; full of envy, murder, debate, deceit, malignity; whisperers, backbiters, haters of God, despiteful, proud, boasters, inventors of evil things, disobedient to parents, without understanding, covenantbreakers, without natural affection, implacable, unmerciful: who knowing the judgment of God, that they which commit such things are worthy of death, not only do the same, but have pleasure in them that do them.