The Fourth of July show will go on as usual tonight in Boston. For the 40th year in a row, the Boston Pops will perform along the banks of the Charles River as fireworks burst overhead.
But the scene and the mood will be different, with heavy security measures in the wake of the recent Boston Marathon bombings. It's in the back of many people's minds that the July 4 celebration was apparently the original target until, police say, the bombers decided to attack the race instead.
A woman cleans Guy Fawkes masks, used by many demonstrators in protests around the world and in the recent wave of demonstrations in Brazil, at a factory assembly line in Sao Goncalo, near Rio de Janeiro, June 28.
Credit Ricardo Moraes / Reuters/Landov
<strong><a href="http://menasolidaritynetwork.com/2012/05/02/tunisia-thousands-fill-streets-to-celebrate-may-day/">Tunis, Tunisia</a>:</strong> A man wears an Anonymous mask during a May Day rally on May 1.
Credit Amine Landoulsi / AP
<strong><a href="http://www.npr.org/blogs/thetwo-way/2012/06/11/154750736/has-occupy-crashed-or-just-begun">New York</a>:</strong> A young man with an Anonymous mask marches with Occupy Wall Street protesters on Nov. 11, 2011, at Zuccotti Park in New York.
Credit Don Emmert / AFP/Getty Images
<strong><a href="http://www.npr.org/blogs/thetwo-way/2012/11/23/165765488/egyptians-take-to-the-streets-after-president-expands-powers">Alexandria, Egypt</a>:</strong> A masked protester poses with a tear gas canister in front of a burning vehicle during clashes between opponents of Egyptian President Mohammed Morsi and his Islamist supporters on Dec. 21, 2012.
<strong><a href="http://www.npr.org/blogs/parallels/2013/06/18/193101142/with-inspiration-from-turkey-brazil-discovers-mass-protests">Rio de Janeiro</a>:</strong> Demonstrators wearing Guy Fawkes masks and waving a Brazilian national flag march in downtown Rio on June 17 against higher public transportation fares and the use of public funds to finance international soccer tournaments.