By AP, July 25, 2016

PHILADELPHIA (AP) -- Former rivals Hillary Clinton and Bernie Sanders urgently joined forces Monday to tamp down dissent among his supporters, as Democrats tried to keep infighting from overtaking a convention opening night featuring some of the party's biggest stars.

It was unclear whether the efforts would succeed. Chants of "Bernie" echoed through the arena, and boos could be heard at times when Clinton's name was raised. Outside the arena, several hundred Sanders backers marched down Philadelphia's sweltering streets. Signs carried messages such as "Never Hillary" and even in one case "Just go to jail, Hillary," an echo of the Republicans' "Lock her up." 
 

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