People are emotionally connected to their ideology. They are essentially one and the same. Attack the ideology and by extension you attack the person.
Yes and that is why most people should stay out of politics.
No ideology is without its faults and in a ever-changing society, holding on to an ideology really promotes backwards thinking and is poison to solving problems.
When people consider their ideology a part of themselves its makes the task of seing things in clear perspective even harder.
In short most people should stay away from having an ideology because it makes it very difficult to see things in a clear light.