Final answer:
The reference does not contain specific information on the individuals involved in the protests or the leaders arrested during Ghana's political turmoil in the latter half of the 20th century. Additional historical data is needed to accurately answer the student's questions.
Step-by-step explanation:
The provided reference information does not specifically detail the ex-servicemen who were killed or the Ghanaian leaders who were blamed and arrested for the riots, the political party the leaders belonged to, or the name given to the leaders after their arrest during the long period of political instability in Ghana in the latter half of the 20th century. However, it does mention that the military often justified their coups by accusing the previous regime of corruption, similar to how asafo groups would rise to depose their chiefs. This frequent change in leadership and allegations of corruption are indicative of the turbulent political climate in Ghana post-independence.
For further clarity on the specific events referred to in the questions, additional historical sources pertaining to the detailed incidents during those specific protests would be required. However, the context provided suggests that the recurring coups and claims of corruption significantly influenced Ghana's political stability and development.