It was smart in the way it was carried out.
It was a smart tactical move...only problem was it was foreseen by others.

Also, Michael and Vito had been planning the massacre of the Families all along, so they knew what to expect and when to expect it. Which was NOT foreseen by anyone else.

Apple


A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government.

- THOMAS JEFFERSON