What makes any people 'good' in your eyes? Do they have to be Christians? I ask only because you quoted a biblical verse. Can they still be 'good' if they espouse and follow Christian like beliefs?
Do you know anything about the Sikh religion or the history of Sikhs? Google it and see if its adherents share any beliefs that are in conflict with the basic tenets of Christianity with respect to behavior and how to treat others.
Among other things, Sikhism was created as an offshoot of the Hindu religion specifically to combat Muslims. It also abhors the Hindu caste system, because in the eyes of the one God, all men are equal.
Are there bad Sikhs? Absolutely. Just like there are bad Christians, bad Buddhists, bad Jews, bad Muslims (though I tend to think of Islam as more of a cult than a true religion), etc.
The poster you responded to was no doubt basing their opinion on their personal experiences with Sikhs and/or their knowledge of the religion.
If you're of the opinion that only Christians can be good, then this is lost on you, and I apologize for wasting your time :-).
Cheers.
Our righteousness is as filthy rags in the eyes of God. No, none of us are good.
By faith alone, He imputes righteousness to us by His grace.
In the case of the Sikh. He failed to respect legitimate authority in the court of law. All men in that court are to expose their head. Nothing keeps him from having faith in what God provides and worshiping God. The court administers justice in local governance, which is also an institution established by God for believer and unbeliever alike.
Both may enjoy the benefits and fruits of those institutions, provided they respect the legitimate authority within those institutions. If we don’t, we have volitional responsibility and are accountable for our actions.
If the judge or the LEO acted inappropriately, then they may be charged and adjudicated by a higher authority. Those submitting to judgment are not the ones making the rules and adjudicating their sentence. If they did, their judgment would be unrighteous.