LAWRENCE, Mass. Massachusetts Sen. Elizabeth Warren officially announced her presidential bid near the banks of the Merrimack River here on Saturday, picking a highly symbolic location that points to both long, worker-centric political tradition Warren seeks to inherit and the challenge she might face in winning over an increasingly diverse Democratic party.

This is the fight of our lives. The fight to build an America where dreams are possible, an America that works for everyone. I am in that fight all the way, Warren said at the Everett Mills, where a group of Polish women walked off the job in January 1912, setting off the famous Bread and Roses Strike, when tens of thousands of immigrant workers united to shut down the citys textile mills for the winter, winning substantial raises and safer work conditions.