 He became one of SDS' earliest and most prominent ideological thinkers, and was widely recognized as a charismatic persuasive speaker.At the SDS national convention in East Lansing, Michigan, in June 1968, Jacobs' thinking began to become even more radical.The East Lansing convention is best known for the interminable debates and ferocious parliamentary battles between the SDS National Office leadership (led by Michael Klonsky and Bernardine Dohrn) and the delegates from PL-controlled SDS chapters around the country.