Jake Tapper: I'm ashamed by U.S. leaders' absence in Paris

By Jake Tapper, CNN

Updated 1245 GMT (2045 HKT) January 12, 2015

People march down Boulevard Voltaire from the Place de la Republique to the Place de la Nation in Paris on Sunday, January 11. An estimated 1.5 million people joined world leaders in the "unity rally."
Photos: Thousands rally in Paris
People march down Boulevard Voltaire from the Place de la Republique to the Place de la Nation in Paris on Sunday, January 11. An estimated 1.5 million people joined world leaders in the "unity rally."
Hide Caption
1 of 20
Demonstrators hold a sign that translates as "Urgent: More democracy everywhere against barbarism."
Photos: Thousands rally in Paris
Demonstrators hold a sign that translates as "Urgent: More democracy everywhere against barbarism."
Hide Caption
2 of 20
Demonstrators wave flags on the monument at the center of the Place de la Republique before the rally.
Photos: Thousands rally in Paris
Demonstrators wave flags on the monument at the center of the Place de la Republique before the rally.
Hide Caption
3 of 20
Charlie Hebdo cartoonist Renald "Luz" Luzier, left, speaks to Charlie Hebdo journalist Patrick Pelloux during the rally. Luzier is the only surviving cartoonist left at the magazine.
Photos: Thousands rally in Paris
Charlie Hebdo cartoonist Renald "Luz" Luzier, left, speaks to Charlie Hebdo journalist Patrick Pelloux during the rally. Luzier is the only surviving cartoonist left at the magazine.
Hide Caption
4 of 20
European Commission President Jean-Claude Juncker, from left, Israel's Prime Minister Benjamin Netanyahu, former French President Nicolas Sarkozy, Mali's President Ibrahim Boubacar Keita, French President Francois Hollande, Germany's Chancellor Angela Merkel, Palestinian Authority President Mahmoud Abbas and Italy's Prime Minister Matteo Renzi walk together as they lead thousands of people during the rally.
Photos: Thousands rally in Paris
European Commission President Jean-Claude Juncker, from left, Israel's Prime Minister Benjamin Netanyahu, former French President Nicolas Sarkozy, Mali's President Ibrahim Boubacar Keita, French President Francois Hollande, Germany's Chancellor Angela Merkel, Palestinian Authority President Mahmoud Abbas and Italy's Prime Minister Matteo Renzi walk together as they lead thousands of people during the rally.
Hide Caption
5 of 20
The massive crowd at the Place de la Republique is seen from above.
Photos: Thousands rally in Paris
The massive crowd at the Place de la Republique is seen from above.
Hide Caption
6 of 20
People gather at Place de la Nation in Paris.
Photos: Thousands rally in Paris
People gather at Place de la Nation in Paris.
Hide Caption
7 of 20
A young man waves a French national flag in the streets of Paris.
Photos: Thousands rally in Paris
A young man waves a French national flag in the streets of Paris.
Hide Caption
8 of 20
Demonstrators make their way along boulevard Voltaire during the rally.
Photos: Thousands rally in Paris
Demonstrators make their way along boulevard Voltaire during the rally.
Hide Caption
9 of 20