Complex sentence: During the 1970s and 80s, Evers was involved in the American libertarian movement and the Libertarian Party specifically; for several years he edited the left-libertarian magazine "Inquiry".
Split into simpler sentences: During the 1970s and 80s, Evers was involved in the American libertarian movement and the Libertarian Party specifically. For several years he edited the left-libertarian magazine "Inquiry".