Experience or the lack thereof also plays a substantial role.
For example- I live in a neihborhood infested with disgusting unibrow covered, unsanitary low life trash from former russian republics. These people are digusting, crooked, low lifes that have money for nice cars but can't be bothered to spend money on soap or deodorant. These cockroaches speak russian, but are jews that come from countries that end in Stan. Uzbekistian, Kazakstan, Tajikistan etc.
I have lived among this filth nearly my entire life-- So I know what I am talking about when I tell you that the movie Borat is not much of an exageration when it comes to these people.
In that respect, my experience gives me a discriminatory point of view-- However, that does not mean my views are not based in fact.
However, take some corn fed hick from Idaho that has never seen a black person in real life. If they just watch television and have racist parents that tell them xyz about blacks, then chances are they are going to raise their children the same way and perpetuate the racist mindset. This point of view is of less merit than mine because it is based in imagination rather than experience.