Survivors and first responders came together in Boston to commemorate the first anniversary of the Boston Marathon Bombings. Ukraine's acting president has announced the beginning of an "anti-terrorist operation" to root out separatists in the country. The white supremacist charged in the shootings that left three dead at two Jewish community sites in Kansas made his first court appearance. And, ABC’s Byron Pitts with the lives of strangers with a shared connection who reunited at the finish line of the Boston Marathon. This and more on the World News Podcast.