@NealNealNeal,
Therefore, when you verbally attack someone by calling him an idiot or moron you are really insiuling people who have low intelligence. People, including liberals in the 20th century realized that
However, liberals we're far more reasonable than the "progressives" of today. They often spoke of educating the ignorant members of various groups.
People of low intelligence should have their dignity respected However, they have little political power. They are demeaned by progressives, who are quite willing to consider certain people as less than human.