Thanks to globalization, people are more easily connected to more and more cultures that otherwise they wouldn't, the reactions that people feel when they know other kind of cultures is called a cultural shock, it can be positive or negative, but most of the times is negative due to the cultural differences that often translates to a religion confrontation, that's what happends when a culture is not well introduced to a new region, some examples are shown when a company starts selling meat in India or the creation of new websites that may harm a social belive in one region of the world. That's why is very important to take seriously this matter.
To begin with, the terrorist crisis that emerged in 2001 due to the crash of to airplanes in the twin towers and the hate from the so called "islamics" to the United States civilians can be explained in some way. The cultural shok that was wrongly managed in the middle east has caused all this hate, the radical fundamentalist of the Islamic religion couldn´t resist all that contradictions coming from america. Obviusly its not all because of the cultural shock, other factors like support of U.S. to Israel and oil had done their job. But if this matter had been managed in a total different way, we may be living in a more peaceful world.
Despite that the cultural shock has to be manage with care, some irresponsabilities can make a good. For example, Japan is one of the more powerfull and advanced countries in the world, and was all thanks to the fact that the United States introduced their culture and with it its knowelede by force in Japan. But this do not mean that everytime a countrie imposes their culture, everything is going to be fine.
To sum up, the cultural matter is important, because if is change the behavior of that specific society is going to change, it doesn't means that is bad to try to try other cultures and show yours to other people, because possitive things can be taken from that excersice, but is recommended use discretion and madurity.

