If you don't think this kind of gerrymandering is going on in every state with a GOTP legislature right now, you are out of your mind. (HT: Peach Pundit, though be sure to check out the comments.)
Do I even have to bring up the underlying racial motivations of drawing districts this way? In the past, districts were drawn to dilute minority voting; these days districts are drawn to concentrate minority voting while diluting their representation.
To my more liberal or progressive friends who have yet to accept that liberals and progressives have to begin speaking with folks besides those who already agree with them, this is the end result of letting the Republicans control the national debate. That debate is focused only on Washington, as are so many liberal or progressive pundits, and this results in liberal, progressive, centrist and conservative Democrats fleeing the state parties in droves. Young ambitious candidates interested in politics only have one place to turn in some states.
The Democrats have lost the US House of Representatives for at least 10 years. It doesn't matter what y'all think, it matters what the rules are. The districts across this nation will be gerrymandered to support a Republican majority, and since the Democratic Party has consistently refused to invest in party infrastructure at the state level, they're playing from at least two touchdowns behind at the start of the game. It doesn't matter what demographics change, the folks who draw the districts will just go around them. As they always have.