Anchor: The latitude which may exist for restrictions on speech where the govern-ment's own message is being delivered flows in part from our observation that, [w]hen the government speaks, for instance to promote its own policies or to advance a particular idea, it is, in the end, accountable to the electorate and the political process for its advocacy.
Entailed: Sometimes the government speaks only to promote its own policies. 
Contradiction: The government's message is not currently being delivered.
Contradiction: four people in what looks like a main street are walking while one sits down.
Contradiction: a dog is playing with a ball
Contradiction: The children are brushing their teeth.
Contradiction: King Herod the Great built an aqueduct that filled cisterns.