When they held the first Tea Parties earlier this year, I noted the inherent challenges of organizing working people who hate higher taxes on a weekday (and the day taxes are due). The next round of nationwide events will be on July 4 — bringing its own challenges of time conflicts with parades and barbecues, but at least almost everyone has the day off. A special note for my South Carolina Low Country/Savannah area readers: The one in Hilton Head is being held in an air-conditioned high-school performing-arts auditorium.