Protesters opposed to the Dakota Access Pipeline chained themselves together to block the entrance to a Downtown Crossing Bank Thursday. First responders spent about two hours removing them.
Two men and two women were arrested on charges of resisting arrest and disturbing the peace, Officer James Kenneally, a spokesman for Boston police.
Boston police and firefighters responded to the scene on Winter Street around 9:45 a.m. and the protesters were removed by around 11:30 a.m., officials said.
A group calling itself The FANG Collective broadcast the protest over Facebook.
The group said in a statement that they blocked the entrance to the TD Bank branch because the bank is helping to finance the pipleline, which has drawn fierce opposition from Native Americans and environmental groups who see it as a threat to safe drinking water supplies.
The four people in the blockade used bicycle locks and PVC piping to block the entrance, forcing first responders to move slowly as they worked to move them away from the entryway.
Last week, some two dozen Massachusetts pastors joined more than 500 clergy from around the country to protest the pipeline at its proposed crossing point on the Standing Rock Sioux Reservation in North Dakota.
Native Americans from across the country have joined the tribe in its fight against the 1,170-mile, $3.7 billion pipeline, which would send crude oil through North Dakota, South Dakota, and Iowa to Illinois for shipment to refineries elsewhere.
The FANG Collective said TD Bank has drawn their attention because the company is a key lender for the private company working to get local, state and federal regulatory approval to build the pipeline.