July 13, 2015 7:30 pm Walker Launches 2016 Campaign Is Scott Walker the GOP’s best hope for blocking Hillary Clinton’s path to the White House? Former Deval Patrick spokesperson Jesse Mermell and former Massachusetts State Treasurer Joe Malone. US & World Videos 0:59 Jury seated in Karen Read murder trial, hearing for outstanding motions Thursday 1:33 Ice Cube talks basketball: The Big 3 league, how far the Celtics can go, and more 2:31 Mike Gorman retires as voice of the Celtics 1:27 Ex-Holyoke city councilor facing child sex abuse charges appears to join Russian military 1:21 Dana-Farber Cancer Institute retracts 7 studies