The killings of a Border Patrol agent in Vermont last week, a state’s witness in California, and a pair of senior citizens in Pennsylvania all appear to be linked to a fringe group of West Coast vegan activists and artificial intelligence theorists.

The Celtics will look to win their third game in a row for the first time since the start of last month, while the Sixers hope to regain the shaken momentum they had before a clos

The Philadelphia 76ers (19-28) will face off against the Boston Celtics (34-15) on Sunday at 6 p.m. ET at Wells Fargo Center, with the game airing on ESPN.