▁out pat ient ▁follow - up . ▁He ▁required ▁that ▁his ▁p ension ▁be ▁restored . ▁Although ▁he ▁began ▁to ▁draw ▁p ension ▁again , ▁it ▁was ▁sever ely ▁reduced . ▁ ▁He ▁became ▁much ▁more ▁active ▁in ▁his ▁diss idence , ▁stir red ▁other ▁people ▁to ▁protest ▁some ▁of ▁the ▁State ' s ▁actions ▁and ▁received ▁several ▁warnings ▁from ▁the ▁K GB . ▁In ▁ 1 9 6 8 , ▁after ▁Gr ig oren ko ▁protest ed ▁the ▁Soviet ▁invasion ▁of ▁Czech oslov ak ia , ▁he ▁was ▁exp elled ▁from ▁the ▁Commun ist ▁Party ▁of ▁the ▁Soviet ▁Union , ▁arrested ▁and ▁ultimately ▁committed ▁to ▁a ▁mental ▁hospital ▁until ▁ 2 6 ▁June ▁ 1 9 7 4 ▁after ▁ 5 ▁years ▁of ▁det ention . ▁As ▁Gr ig oren ko ▁had ▁follow ers ▁in ▁Moscow , ▁he ▁was ▁l ured ▁to ▁the ▁far - away ▁T ash k ent . ▁While ▁there , ▁he ▁was ▁again ▁arrested ▁and ▁exam ined ▁by ▁a ▁psych iat ric ▁team . ▁None ▁of ▁the ▁manifest ations ▁or ▁sympt oms ▁c ited ▁by ▁the ▁L un ts ▁commission ▁were ▁found ▁there ▁by ▁the ▁second ▁exam ination ▁conducted ▁under ▁the ▁chair mans hip ▁of ▁F y odor ▁Det eng of . ▁The ▁diagn osis ▁and ▁evaluation ▁made ▁by ▁the ▁commission ▁was ▁that ▁" Gr ig oren ko ' s ▁[ c riminal ] ▁activity ▁had ▁a ▁purpose ful ▁character , ▁it ▁was ▁related ▁to ▁concrete ▁events ▁and ▁facts ... ▁It ▁did ▁not ▁reve al ▁any ▁signs ▁of