Radicalized Redistricting

Many people believe that one crucial driver of polarization is congressional gerrymandering, which is when lawmakers draw the borders of districts to avoid the neighborhoods of people most likely to vote against their party. What this does is create new political communities. But does it also destroy old ones? MSNBC host Rev. Al Sharpton, also founder and president of the National Action Network, is leading a march beginning today from Selma, Alabama to Montgomery in support of voter rights.