The fast food strikes that have thousands of workers walking off the job in 100 cities Thursday are intended to build power by creating pressure on the fast food industry as a whole, not by targeting individual restaurants. So it's a measure of how the strikes have grown that reports are trickling in of fast food outlets that have been forced to close; a Pittsburgh Dunkin Donuts and a Chicago Snarfs Sub Shop have had to close during Thursday's strikes.
A key reason not to focus on individual outlets is that, in a heavily franchised industry, targeting individual outlets allows corporate management to claim it's not involved in pay decisions or abusive conditions. Pushing blame off onto franchise owners is one of the most common responses from fast food chains when poor working conditions are publicized; really, though, poverty wages and bad conditions are an industry-wide strategy. If McDonald's corporate management wanted to raise wages, franchisees would no more stand in the way than they currently get to decide on the menu they serve. And as former Labor Secretary Robert Reich explains, the issues the workers face are true throughout the fast food and retail industries:

That's why we see McDonald's advising workers to
apply for food stamps or
sell their Christmas presents. It's why
52 percent of front-line fast food workers are on public assistance, to the tune of nearly $7 billion a year. The conditions these workers are fighting are the conditions the entire fast food industry is built on. The conditions won't change if the power balance doesn't change first, and the power balance won't change if workers don't fight and their communities don't support them.