Sure, but crowds actually don't behave like conscious entities. Getting a crowd to stomp its feet is not at all like having a conversation with a crowd. To have a conversation with something, that thing has to be able to somehow "talk back" and provide evidence that it has thoughts and ideas of its own. Crowds don't do that. To the contrary, crowds behave according to fairly simple dynamics, often the detriment of their constituents. There is no evidence at all of consciousness there.