Complex sentence: Dionne has labeled a public option a "monopoly-buster", and has charged that those opposed to a government plan know public opinion is against them and are resisting it by trying to move discourse towards abstract and demagogic ground.
Split into simpler sentences: Dionne has labeled a public option a "monopoly-buster". He has also stated those opposed to a government plan know public opinion is against them and are resisting it by trying to move discourse towards abstract and demagogic ground.