Caltrans has broken up several impeach Obama demos, lately. The communist-infiltrated Service Employees International Union (SEIU) is the largest union in California State Government and is also active in Caltrans. The blue-collar Caltrans employees are likely SEIU members or otherwise influenced by SEIU leaders and paid with tax money to disrupt these protests.
Obama worked as an organizer with SEIU and SEIU is one of Obama’s biggest supporters and campaign contributors.
SEIU has also unionized Departments of Transportation in other states.