Why the political leaders don't think before they criticise other leaders

State elections in some of the states are on. A lot of activity around. Many meetings. Big leaders on move. In the meetings, politicians criticise other parties and other leaders. When they talk they never think whether what they are taking is decent or not also. For this kind of speeches, the caretaker Chief Minister of Telangana is very known. He uses very bad language and he will never keep the decorum of speech. Yesterday in a meeting he was questioning PM that whether India is PM's Kingdom. But he always talks as if Telangana is his Kingdom. He is using very abusive language against Rahul Gandhi, Sonia Gandhi and Chandra Babu Naidu also. He was using very bad words against the Andhra People living in Hyderabad. Why the election commission is silent and why they are not taking any action. I fail to understand the acts of these politicians.