▁which ▁po ols ▁is ▁unknown , ▁as ▁are ▁the ▁names ▁of ▁many ▁of ▁the ▁f enc ers . ▁ ▁Sem if inals ▁ ▁The ▁ 1 6 ▁remaining ▁f enc ers ▁were ▁divided ▁into ▁two ▁po ols ▁of ▁ 8 . ▁ ▁They ▁played ▁round - ro bin ▁tournament s ▁on ▁ 2 2 ▁June , ▁with ▁four ▁adv ancing ▁from ▁each ▁pool ▁to ▁the ▁final . ▁ ▁Final ▁ ▁The ▁final ▁was ▁a ▁round - ro bin ▁among ▁the ▁ 8 ▁remaining ▁f enc ers . ▁ ▁Notes ▁ ▁Category : F encing ▁at ▁the ▁ 1 9 0 0 ▁Summer ▁Olympics <0x0A> </s> ▁Bar ack ▁Ob ama , ▁who ▁was ▁the ▁ 4 4 th ▁President ▁of ▁the ▁United ▁States , ▁was ▁the ▁target ▁of ▁several ▁assass ination ▁thre ats ▁and ▁alleg ed ▁plots ▁starting ▁from ▁when ▁he ▁became ▁a ▁president ial ▁candidate ▁in ▁ 2 0 0 7 . ▁Secret ▁Service ▁protection ▁for ▁Ob ama ▁began ▁after ▁he ▁received ▁a ▁death ▁threat ▁in ▁ 2 0 0 7 , ▁while ▁serving ▁as ▁the ▁junior ▁United ▁States ▁sen ator ▁from ▁Illinois ▁and ▁running ▁for ▁president . ▁This ▁marked ▁the ▁earliest ▁time ▁a ▁candidate ▁received ▁such ▁protection ▁before ▁being ▁nominated . ▁Security ▁was ▁increased ▁early ▁for ▁Ob ama ▁due ▁to ▁fear s ▁of ▁possible ▁assass ination ▁attempts ▁by ▁white ▁supre mac ist ▁or ▁other ▁rac ist ▁groups ▁or ▁individuals ▁against ▁the ▁first ▁African ▁American ▁major ▁party ▁president ial ▁nom ine e . ▁ ▁Some ▁of ▁the ▁thre ats ▁were ▁extended ▁to ▁members