The Democrats continue to play to the liberal (ie PC) uninformed.
1)They believe that restricting the sales of guns to lawful citizens will reduce gun violence and guns cause crimes; even though as gun ownership has increased, the crime rate has fallen (a assault weapon ban is necessary even though they account for fewer homicides than shotguns). Like the presidents message to congress by Obama; do something; anything (regardless if it has any affect, becasue it's all for show).
2)They believe Islam is a religion of peace even though there is violent jihad, slavery, misogyny and apostasy in the Quran and other Islamic scripture; and ignores the fact that radical Islam is responsible for pretty much all the terrorists violence in the world today.
2b. They believe that Islamic radical jihad is based on retaliation, rather the Quran's promise of a world Caliphate (as if the Clinton Administration did some wrong to the Islamic world the resulted in 911) and 1400 years of Sunni-Shiite warfare.
3)They believe the First Amendment is flawed because it allows diverse belief systems to be voiced, it also allows hate speech and micro-agressions, which they see as a problem unless it comes from a liberals mouth.
4)They believe that Democrats are not responsible for the slavery that caused the Civil War and the continued racism during reconstruction through Jim Crow, the KKK, segregation and poll taxes. Even if the Republicans magically became the racists party that the Democrats were (when Republicans made gains in Presidential elections, the Democrats still controlled most of the state houses in the south through the 60's, 70's and 80's), after 100 years of abolitionists policy and the forcing of civil rights on a racist south, it does not erase the historical damage done to the black psyche by Democrats, that continues even today in the Black Lives Matter movement. They don't see how the Democrats continue to oppress the black community by making it totally dependent on welfare, gave more money to families without father in the house and rewarded young women when they became unwed mothers, and segregated them in high crime low income urban cities they control.
5) There is more, but most of all "they always blame America first"