Government's intervention can divides to two arguments as following is
Arguments for Government Intervention
Greater Equality – redistribute income and wealth to improve equality of opportunity and equality of outcome
Market Failure – Markets fail to take into account externalities and are likely to under-produce public / merit goods. For example, governments can subsidise or provide goods with positive externalities.
Macroeconomic intervention. – intervention to overcome prolonged recessions and reduce unemployment.
Arguments against Government Intervention
Governments liable to make the wrong decisions – influence by political pressure groups, they spend on inefficient projects which lead to inefficient outcome.
Personal Freedom. Government intervention is taking away individuals decision on how to spend and act. Economic intervention, takes some personal freedom away.
Market is best at deciding how and when to produce.