Brugger studied law, philosophy and sociology at the Universities in Munich and Tuebingen. After completing his Ph.D. (Dr. iur.) at Tuebingen University with the prize-winning book Menschenrechtsethos und Verantwortungspolitik. Max Webers Beitrag zur Analyse und Begruendung der Menschenrechte (1980), he then studied at the University of California in Berkeley, obtaining the degree of LL.M. in 1981. Thereafter, he published comparative articles and books on German and American constitutional law and theory and the philosophy of law.
Brugger was author and editor of 17 books and wrote 220 articles and book reviews. Many of his publications focus on human rights in general and free speech issues (hate speech) in particular, judicial review, theories of interpretation, liberalism and communitarianism, constitutional law in times of emergency, and theories of good decisionmaking. In Germany, he reviewed new decisions of the U.S. Supreme Court and was co-editor of the Newsletter of the German-American Lawyers Association.
Einfuehrung in das oeffentliche Recht der USA. Frankfurt/Muenchen: Beck, 2nd ed. 2001. ISBN3-406-47704-6
Demokratie, Freiheit, Gleichheit. Studien zum Verfassungsrecht der USA. Berlin: Duncker & Humblot, 2002. ISBN3-428-10827-2
Freiheit und Sicherheit. Eine staatstheoretische Skizze mit praktischen Beispielen. Baden-Baden: Nomos, 2004. ISBN3-8329-0808-0
Das anthropologische Kreuz der Entscheidung in Politik und Recht. Baden-Baden, 2. Aufl. 2008. ISBN978-3-8329-3697-6
Religion in the Public Sphere: A Comparative Analysis of German, Israeli, American and International Law. Berlin/Heidelberg/New York: Springer, 2007 (co-edited with Michael Karayanni). ISBN978-3-540-73355-3
Rechtsphilosophie im 21. Jahrhundert. Frankfurt a.M.: Suhrkamp, 2008 (co-edited with Ulfrid Neumann and Stephan Kirste). ISBN978-3-518-29494-9.
Dignity, Rights, and Philosophy of Law within the Anthropological Cross of Decision-Making, in: 9 German Law Journal No. 10 (1 October 2008),[1]
The Treatment of Hate Speech in German Constitutional Law (Parts I and II).[2][3]