"All of you! Listen to me; you must listen! Have you forgotten what happened to Dale? Have you forgotten those who died in the firestorm? And for what purpose? The blind ambition of a Mountain King, so riven by greed, he could not see beyond his own desire!", Bard sternly told the people of Laketown, wanting them to see the true picture of Thorin's plan. 

However, the bargeman was below the Master, and the mention of his own ancestor brought an inner anger inside himself. He saw the reality, the people didn't; not to mention the Mayor. "You have no right; no right to enter that mountain!", Bard angrily told the Dwarven prince.