In this situation, we will follow the allegory through to the symbols in the novel. The pigs would represent a group rising in power and the dogs would represent the hired force to keep the people in control. Whenever a dictator comes to power, he generally has to do so by force. The dogs being on the platform with the dogs represent the fact that the pigs have a protective group ready to defend them in case of revolt. Usually when people see an injustice like the rise of a dictator, at least some will question. If enough question, a revolution will begin, and an attempt to dethrone the ruling dictator will ensue.