Their heads are sooo stuck up inside their backsides, unfortunately.
Democrats are so delusional, refusing to open their eyes and minds to the reality of the world. Of course, they're the sort of people who prefer to worry only about the now, worry only about their comfort and convenience right now, and not worry about whatever the future may bring, whether good or bad, delusionally preferring to believe things will naturally, automatically, get better, despite the lessons of history that teach them that things work in cycles of comfortableness and peace followed by war, destruction and death, only to be repeated anew. They just don't care, and don't want to worry that the next time, the Free World will be unprepared for a stronger-and-smarter-than-ever Axis, meaning that although last time around, say, WWII and the Cold War, the Free World won, the next time we may not, unless we face, understand and prepare to neutralize the imminent threats, then...
Of course, there's also the likes of Russia, Iran, China... only a fool would think that those nations' oppressive, tyrannical greedy rulers wouldn't covet the territory and riches of the Free World...
Point being, not all's well in the world. We don't live in a utopian paradise of tolerance and peace, unfortunately, and are actually enjoying what can realistically, wisely only be described as the eye of the storm, but Leftists, including the American Democratic Party, are simply more comfortable pretending otherwise, deluded, seeing the world through rose-colored glasses, blissfully oblivious of any and all dangers, preferring instead to manufacture phony "dangers" to fight against, with the weapons of political correctness and liberal fascism... and that delusionality actually makes the enemies' agenda easier, as the Left's war against imaginary "right-wing" threats actually weakens the Free World and prevents us from focussing on and preparing to deal with real, imminent threats!
They don't want to think for a moment that these real, imminent threats actually threaten all the cool, comfortable stuff they're enjoying today, including basic rights and freedoms which they take for granted.
