I was strictly speaking about ideologies, not nationalities, sexual orientation or what else people don't get to choose.
In most cases people don't put labels on other people, people put labels on themselves and expect people to draw conclusions about their character, even non sequiturs. But only the right conclusions of course(positive character traits). If someone dares to play the game according to the ideologue's rules but with different parameters (negative character traits), they go into full bigot mode and start crying("muh feels!1", "stereotypes! generalizing!1").
"I'M A Y-IST! I'M SO SMART, I CAN EXPLAIN THE ENTIRE UNIVERSE USING A FEW BASELESS ASSUMPTIONS EVEN THOUGH I NEVER STUDIED ANYTHING SCIENTIFIC AND I DON'T KNOW HOW A RIGOROUS PROOF WORKS! RESPECT ME AND GIVE ME MY PRIVILEGES!!1 Y-ISTS ARE CATEGORICALLY HONEST AND MORALLY PERFECT PEOPLE AND OUR FEELINGS ARE MORE IMPORTANT THAN OTHER PEOPLE'S FUNDAMENTAL HUMAN RIGHTS LIKE FREE SPEECH, THEREFORE NOBODY SHOULD BE ALLOWED TO QUESTION OR CRITICISE WHAT WE SAY! THE STATE SHOULD PROMOTE Y-ISM USING TAX MONEY, BUT NOT OTHER IDEOLOGIES I PERSONALLY DON'T LIKE - THOSE SHOULD BE CENSORED! IF SOMEONE DOESN'T LIKE ME, THE ONLY POSSIBLE EXPLANATION IS HE'S A BIGOTED X-IST/SEXIST/RACIST/CAPITALIST EXPLOITER/STALINIST AND HATES ALL Y-ISTS/WOMEN/SEMITES/WORKERS/CAPITALISTS!"
People expecting others to draw conclusions based on self-ascribed labels is nowhere near as common as you may think, especially not "most." This description though only fits the minority of most of the ideologies you listed. Ideologies themselves do not inherently lead to such thinking, but rather an inherent problem within the person. When you see a pattern common among a group of people, you cannot automatically assume it is due to commonalities amongst those people in conscious thought, as you've then skipped a far more common trait and far more likely explanation: they're all human. Not one of those ideologies includes in its bylaws/scripture/founding principles these thoughts, so these are components added by humans subscribing to them, not logic inflicted upon those people as a result of the ideology.
There are quite a few Muslims in the internal medicine teams at my hospital. They don't make their trips to make their daily prayers in a chapel in a large public building in the American South because they're worried about labels or what any of the people walking by think, they do it because it brings them inner peace. It is true that there are many people out there who force their labels on others and do indeed commit the action and thinking which you refer to, but you have to wonder just how much of your perception of that is due to the "bulletin board effect," meaning that they're out there grabbing your attention due to the very fact that they're wanting attention with that label, vs those Muslims working at my hospital who try to quietly slip into the chapel to make their daily prayers.
I don't mean to come across as though chastising, but I do feel rather strongly against this movement among world youth to be so adamantly opposed to people due to their labels or ideologies. It is just as dangerous as anything that those ideologies have inflicted, and gets us as a race nowhere. It is best just to be entirely open, not criticize anyone for what they believe in as long as it's not dangerous or aggressive, and to try to not even think less of a person for what they believe or think. We all do that, and it's a wonderful and peaceful world for everyone (aside of course from the have/have nots and battle for resources, etc).