Some protesters were arrested outside of the Walmart headquarters in northwest D.C. Thursday.
More than 100 people chanted and held signs demanding the retail giant change how it treats its employees.
The group included current and former employees who say the company practices illegal retaliation against workers who speak out against the company.
The group is also calling for an increase in wages for full-time employees. They're demanding that all full-time employees make at least $25,000 a year.
Walmart is planning six stores in D.C. but is threatening to pull out if Mayor Vincent Gray signs a bill that would require large retailers to pay employees at least $12 per hour.