The retail giant Wal-Mart is facing new worker strikes this week in 20 cities nationwide. Employees have walked off the job since last Friday calling for higher wages and protesting alleged worker retaliation. The actions are being held in the lead-up to the company’s annual shareholders meeting on Friday. A new report from the group “Walmart 1 Percent” says Wal-Mart’s four surviving heirs have given less than a tenth of 1 percent of their $140 billion fortune to their family’s own charity.