Senator Richard Blumenthal held a roundtable discussion yesterday with Danbury High School students.  About 30 students attended the discussion to talk about gun safety legislation, immigration reform and other federal issues.  Blumenthal says the students interest in various matters and their mobilization reminds him of what he saw during the civil rights and anti-war movements.  About a thousand students participated in a walk out in March to call for action on gun control reforms.  He says social change movements are often driven by young people.  Blumenthal also encouraged the teenagers who are old enough to vote to exercise that right.