Complex sentence: The police crackdown of the civil unrest in April 2009 (also known as Twitter Revolution) antagonized the society, and the communists were unable to secure one additional vote out of the 41 MPs from the three opposition parties; a snap parliamentary election was necessary.
Split into simpler sentences: The police crackdown of the civil unrest in April 2009 (also known as Twitter Revolution) antagonized the society. The communists were unable to secure one additional vote out of the 41 MPs from the three opposition parties; a snap parliamentary election was necessary.