Progressive is not very defining or limiting. When someone says they are progressive, all it really means is that they believe that society must evolve to become better. When they are conservative, they believe society needs to return to a better time (though they may all disagree when that was or what defined it).

However, other terms like "progressive liberal" or classical liberal (like me), libertarian, or fascist have more specific meaning.

The problem at one level is not that ideologies are divisive, because we all believe something, but rather how we respond to the differences and whether ideologies are reconcilable.

As a classical liberal, I believe in what I call American value-based nationalism. That means we all have the same human rights (unalienable rights given by the Creator). We all have the same civil rights (granted by the Constitution as amended) and as a nation of immigrants, we tolerate others that believe differently than we do, but the longer-term goal of our nation is for the people to "integrate" (I don't think separatism works). Integration begins with tolerance for others, progresses to respect for one another while embracing core values like human rights and civil rights, and eventually over generations achieves a degree of biological integration.

I do believe any ideology that promotes "tribalism" or group identity is toxic. The more that group identity involves violence towards other groups the more toxic, it is. The disadvantage of my "ideology" is that as long as people with toxic ideology don't try to impose it on me, they have a right to believe what they believe.

So, people have a right to be racist under my belief system (even if I find such beliefs deplorable), but once you attempt to translate those beliefs into discriminatory behaviors you violate a core value of our societal contract and that is unacceptable.