Boston is tough. If the masses of heroes who rushed to help in the aftermath of the marathon bombing weren't enough to convince you, just take a look at these photos. The phrase "Boston strong" has reverberated across the city (and Internet) since the tragic bombing two weeks ago, and residents have plastered the region with signs, posters and other expressions of unity. Locals have painted the words "Boston strong" on their sneakers, faces and houses — just to remind the world how tough Bostonians really are. Take a look at some of the Internet's best "Boston strong" pictures in the galley above.
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