The explosions that shook Boston streets during Monday's 2013 Boston Marathon are still fresh in our minds. People across the United States are reeling from the news that bomb blasts killed at least three people and seriously injured more than 100.

To show support for those people and their families, hundreds, maybe even thousands, are sharing touching photos to social networking sites including Facebook, Twitter and Instagram.

Many people are marking supportive comments on Twitter with the hashtag #prayforboston, while others urge everyone to wear purple tomorrow in memory of those lost and maimed in the attack.

@kgwallin, Instagram
@laurenfolksy, Instagram
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Townsquare Media Missoula
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