Why the West should intervene in Syria

I believe that action should be taken to intervene in the Syrian civil war.

Intervention should be taken to help the rebel fighters in Syria, as Syria is a harsh dominant party state under the dictatorship of Bashar Hafez al-Assad. This dictatorship would not be tolerated in the western world so why should it be tolerated in the east. This has been made evident by the recent events of the Arab spring, where in Libya Colonel Gaddafi was toppled from power. This has also happened in Egypt and Tunisia, where the governments havebeen overthrown; all in the pursuit for democracy, to improve human rights and to bring about regime change.