▁In ▁several ▁letters , ▁Nelson ▁would ▁keep ▁Par s ons ▁informed ▁of ▁the ▁often - t ur bul ent ▁left ist ▁environment ▁of ▁Marc use . ▁In ▁the ▁letter ▁of ▁September ▁ 1 9 6 7 , ▁Nelson ▁would ▁tell ▁Par s ons ▁how ▁much ▁he ▁enjoyed ▁reading ▁Par s ons ' ▁ess ay ▁on ▁" K in ship ▁and ▁the ▁associ ational ▁As pect ▁of ▁Social ▁Str ucture ." ▁Also , ▁one ▁of ▁the ▁sch ol ars ▁on ▁whose ▁work ▁Par s ons ▁and ▁Nelson ▁would ▁share ▁internal ▁comment aries ▁was ▁Hab erm as . ▁ ▁Par s ons ▁was ▁opposed ▁to ▁the ▁Vietnam ▁War ▁but ▁was ▁dist urbed ▁by ▁what ▁he ▁considered ▁the ▁anti - int el lect ual ▁t endency ▁in ▁the ▁student ▁re bell ion : ▁that ▁serious ▁debate ▁was ▁often ▁subst it uted ▁by ▁hand y ▁s log ans ▁from ▁commun ists ▁Karl ▁Marx , ▁Ma o ▁Z ed ong ▁and ▁F idel ▁Castro . ▁ ▁Eth nic ity , ▁kin ship , ▁and ▁diff use ▁solid ar ity ▁Par s ons ▁had ▁for ▁years ▁correspond ed ▁with ▁his ▁former ▁gradu ate ▁student ▁David ▁M . ▁Schne ider , ▁who ▁had ▁taught ▁at ▁the ▁University ▁of ▁California ▁Ber keley ▁until ▁the ▁latter , ▁in ▁ 1 9 6 0 , ▁accepted ▁a ▁position ▁as ▁professor ▁in ▁anth rop ology ▁at ▁the ▁University ▁of ▁Chicago . ▁Schne ider ▁had ▁received ▁his ▁Ph D ▁at ▁Harvard ▁in ▁social ▁anth rop ology ▁in ▁ 1 9 4 9 ▁and ▁had ▁become