People understand that the nature of karma is that it is the result of our own previous wrongdoings which we made in a previous life (we just don’t remember), of the present life, and we must reap what we have sown by ourselves. However, if you cannot completely atone for the harvest of bad karma during your life, it will be transferred to your children or grandchildren just like an inheritance. This shows that our bad karma is not always only caused by us. Therefore, since olden times people have feared karma, prayed to the Buddha and examined their own behavior carefully.
It is especially important that we should know that by making good karma we are able to extinguish bad karma. Therefore, karma is not fatalism, but is an improvable problem.