The hard left has infiltrated the Democratic Party and they are using the party. The debate attacks on President Obama should be the last straw for Democrats.

The American political system, unlike Europe, is a two-party system. Our election laws and traditions are focused on preserving a two-party system. Whether that is the best way to manage a political system is a discussion for another time.

The hard left is using the ballot access and the reputation of the Democratic Party to advance its agenda. The hard left doesn't respect the Democratic Party or the United States of America. They want power. In the past, they have tried violent revolution and failed, so they are currently using the Democratic Party as a vehicle.

The attacks on President Barack Obama during the second night of the CNN Democratic presidential debate should be a wake-up call to the non-hard left members of the party.

Former Secretary of Housing and Urban Development in the Obama Administration, Julian Castro, attacked President Obama for deporting illegal aliens. New York City Mayor Bill DeBlasio attacked Vice President Joe Biden for not using his influence to stop President Obama from deporting illegal aliens.

The hard-left will attempt to destroy even the first African American president to achieve power. Illegal aliens are more important to some Democrats than even Barack Obama.

Weather Underground bomber William Ayers dedicated one of his books to Sirhan Sirhan, the Palestinian terrorist who assassinated Sen. Robert Kennedy. Despite this grotesque tribute, William Ayers is welcomed by many in the Democratic Party. Even Obama once embraced the political support of Ayers and other members of the terrorist left in America.

Will Barack Obama stand up for himself now against the hard left?

Chris McCarthy is the host of The Chris McCarthy Show on 1420 WBSM New Bedford. He can be heard weekdays from 10 a.m. to noon. Contact him at chris.mccarthy@townsquaremedia.com and follow him on Twitter @Chris_topher_Mc. The opinions expressed in this commentary are solely those of the author.