Complex sentence: Blake and Spence led a motorcycle gang for nearly 10 years (1967-1976 they were political thugs and enforcers for then housing minister Anthony Spaulding) of at least 30 men at this time and terrorised victims in the Tivoli Gardens, Rema and surrounding areas.
Split into simpler sentences: Blake and Spence led a motorcycle gang for nearly ten years (1967-1976). The gang included at least thirty men at this time and terrorised victims in the Tivoli Gardens, Rema and surrounding areas.