Look at people's faces. Notice how they walk, sit, stand and move. Listen to conversations. Watch people interact at work, in the grocery store, at the bank. Start paying attention.
Communication is always and everywhere occurring.
There is literally nothing we can do, short of dying or dropping into a coma, to NOT communicate. Now consider how much of what you're observing about the communication in the world is absolutely unconscious, automatic and unintentional. Communication surrounds and pervades us, like water surrounds and pervades fish. And we don't even notice. I have hope.