Complex sentence: The GC5 provided a political charge to their music comparable to that of The Clash and Stiff Little Fingers, featuring songs dealing with issues such as social and political discontent, leftist politics, and the struggle of the working class.
Split into simpler sentences: The GC5 provided a political charge to their music comparable to that of The Clash and Stiff Little Fingers. Lyrics included themes of social and political discontent, leftist politics, and the struggle of the working class.