As the MBTA’s latest fare hike went into effect this morning, over 300 city councilors, state legislators activists and volunteers led by at-large Boston City Councilor Michelle Wu fanned out across the MBTA system to canvas riders, protest the fare increases and build support for efforts to fix the system.

Wu’s office said in a statement that participants were expected to canvas every subway station and many commuter rail stations during the morning rush hour.

“Starting today, commuters have to choose between paying more for unreliable MBTA service or sitting in the worst traffic in the country,” Wu said in a statement. “Our transportation system is in crisis, and the costs of delay and inaction continue to fall on families who can least afford alternatives. It’s time to marshal the political will for urgent progress toward a public transit system that serves everyone.”

Wu has staked out a position as a leader on transit issues in Boston and has been a vocal critic of the fare increases.

A list of participants issued by Wu’s office included U.S Rep. Ayanna Pressley, the mayors of Cambridge and Somerville, former state Rep. Byron Rushing and several Boston councilors including Council President Andrea Campbell and South Boston Councilor Ed Flynn.

“As a district councilor who represents communities that rely heavily on the MBTA but who have less access to fast and reliable public transportation than our downtown neighborhoods, I cannot support these fair increases until we address issues of equity, access and quality service,” Campbell said in a statement. “For us to lay the burden of those fixes on our residents is unacceptable. I join many residents and colleagues to call on the governor and the MBTA to act with greater urgency, and to find additional revenue streams for the necessary investments to make our transit system work for everyone.”

The MBTA’s Fiscal and Management Control Board approved a 6 percent fare increase for subway and commuter rail riders last month that increased the one-way subway fare by $0.15 to $2.40, a monthly pass by $5.50 to $90 and monthly commuter rail passes by as much as $27.75, depending on the distance a buyer planned to travel. Gov. Charlie Baker has maintained the fare hikes are necessary to close the MBTA’s operating deficit.