Coast to coast, Democratic presidential candidates marked Labor Day by talking to crowds and marching in parades. But many of the candidates focused less on jobs than on the gun debate, after a mass shooting in Odessa, Texas, over the weekend left seven people dead. Addressing deadly mass shootings and gun control in the United States is also expected to be a top priority for Congress when lawmakers return from the August recess. 

Tamara Keith of NPR and Amy Walter of the Cook Political Report are on hand to explore President Donald Trump's relationship to union workers, the shifting profile of labor voters and how Republicans and Democrats are approaching the issue of gun violence differently. It's Politics Monday: Their expert analysis is one click away!