Herbert J. Gans, an eminent sociologist who studied the communities and cultural bastions of America up close and shattered popular myths about urban and suburban life, poverty, ethnic groups and the news media, died on Monday at his home in Manhattan. He was 97. His death was confirmed by his son, David Gans. A refugee from Nazi Germany who became one of the nation’s most influential social critics, Dr. Gans taught at Columbia and other leading universities for 54 years, wrote a dozen books and hundreds of articles and shaped the thinking of government and corporate policymakers, colleagues in sociology...