0 0 , 0 0 0 ▁members . ▁ ▁So on ▁later , ▁on ▁ 2 6 ▁September ▁ 1 9 5 1 , ▁he ▁had ▁supported ▁the ▁idea ▁of ▁On n ▁Ja af ar ▁to ▁form ▁the ▁Independ ence ▁of ▁Mal aya ▁Party ▁( I MP ) ▁in ▁K ual a ▁L ump ur ▁with ▁co - operation ▁of ▁various ▁races ▁as ▁her ▁theme ▁of ▁struggle . ▁ ▁However , ▁the ▁formation ▁was ▁cho ppy , ▁which ▁due ▁to ▁the ▁fact ▁that ▁D ato ' ▁On n ▁Ja af ar ▁was ▁not ▁co - oper ative ▁on ▁the ▁issue ▁of ▁citizens hip . ▁ ▁In ▁the ▁end , ▁Tan ▁decided ▁that ▁only ▁a ▁Chinese ▁party ▁could ▁saf egu ard ▁the ▁interests ▁of ▁his ▁community ▁and ▁that ▁multi - eth nic ▁co - operation ▁was ▁more ▁likely ▁to ▁be ▁achieved ▁through ▁partners hip ▁with ▁U M NO . ▁With ▁that , ▁the ▁M CA ▁joined ▁with ▁U M NO ▁to ▁form ▁the ▁Alliance , ▁the ▁prec ursor ▁to ▁the ▁Bar isan ▁Nas ional . ▁However ▁some ▁people ▁do ▁not ▁agree ▁that ▁he ▁acted ▁in ▁best ▁interest ▁of ▁Malays ian ▁Chinese ▁as ▁some ▁felt ▁that ▁the ▁marg inal ization ▁of ▁Malays ian ▁Chinese ▁would ▁not ▁be ▁so ▁severe ▁had ▁the ▁British ▁ruled ▁until ▁now ▁cit ing ▁Hong ▁Kong ▁as ▁an ▁example . ▁ ▁In ▁ 1 9 5 2 , ▁Tan ▁Ch eng ▁Lock ▁and ▁the ▁United ▁Malays ▁National ▁Organisation ▁( UM NO ) ▁under ▁Tun ku ▁Rah man ' s ▁leadership ▁cont ested