Not too long ago in this very country we had this.
The Battle of Athens
V. From Ballots to Bullets
The election was held on 1 August. To intimidate voters, Mansfield brought in some 200 armed "deputies". GI poll-watchers were beaten almost at once. At about 3 p.m., Tom Gillespie, an African-American voter, was told by a Sheriff's deputy, "'******, you can't vote here today!!'". Despite being beaten, Gillespie persisted; the enraged deputy shot him. The gunshot drew a crowd. Rumors spread that Gillespie had been "shot in the back"; he later recovered. (C. Stephen Byrum, The Battle of Athens; Paidia Productions, Chattanooga TN, 1987; pp. 155-57).
Other deputies detained ex-GI poll-watchers in a polling place, as that made the ballot count "public". A crowd gathered. Sheriff Mansfield told his deputies to disperse the crowd. When the two ex-GIs smashed a big window and escaped, the crowd surged forward. "The deputies, with guns drawn, formed a tight half-circle around the front of the polling place. One deputy, "his gun raised high ...shouted: 'You sons-of-bitches cross this street and I'll kill you!'" (Byrum, p. 165).
Mansfield took the ballot boxes to the jail for counting. The deputies seemed to fear immediate attack, by the "people who had just liberated Europe and the South Pacific from two of the most powerful war machines in human history." (Byrum, pp. 168-69).
Short of firearms and ammunition, the GIs scoured the county to find them. By borrowing keys to the National Guard and State Guard Armories, they got three M-1 rifles, five .45 semi-automatic pistols, and 24 British Enfield rifles. The armories were nearly empty after the war's end.
By eight p.m., a group of GIs and "local boys" headed for the jail to get the ballot boxes. They occupied high ground facing the jail but left the back door unguarded to give the jail's defenders an easy way out.