16456 is very simple. A four-year-old child is difficult to explain about tolerance - and it is not necessary. Explain that, first, it is ignorant in public places to talk loudly, this in the future will save you from the saying on the whole bus: "mother, and why did you yesterday suck your neighbor?". Secondly, explain that it is ignorant to discuss the characteristics of other people – whether it is the color of the skin, the absence of hair or legs, the height. The Profit.