An Afghan national was detained on the fourth floor of the San Diego Immigration Court Thursday after attending a routine hearing. “I came here to make a better life,” said the man during his arrest, captured on video. “I didn’t know that this would happen … I worked with the U.S. military. I worked in a very dangerous part of Afghanistan with the U.S. military.” He was at the courthouse for a master calendar hearing — the first stage of a removal proceeding in immigration court. Not attending a master calendar hearing is grounds for deportation. The federal government made...