The left does understand how raising taxes reduces economic activity. How about their desire for increasing cigarette taxes, soda taxes? What are they trying to do? Get you to buy less. They know. They know that higher taxes reduce activity. It's real simple: If you want more of an activity, lower taxes on it. If you want less of an activity, raise taxes. So if you want more jobs? It's very simple. You lower payroll taxes. If you don't want as many jobs, then you raise corporate taxes. It's that simple, folks.