Eid is the main religious festival of the Muslims in Bangladesh. Eid means happiness. Everyone wants to share this happiness with near and dear ones. So most of the people. who are living outside their homes for different reasons have a strong desire to get back home during the Eid vacation. As a result, there is a mad rush to board buses, trains, or launches for going home. This often causes transport accidents that take away many lives. However, these cannot stop people from going home to meet their family, in-laws, or friends. What makes people rush for their homes in spite of serious hazards? This is nothing but people's desire to return to the roots. Do human beings have roots like the trees? The answer is 'yes' but unlike the roots of the trees they are invisible, they lie in our minds. It's these roots that make a bond between us and family members, in-laws, friends, neighbors or even between us and the land where we were born and grew up in that sense our families, our land of birth, relatives, our culture traditions, or surroundings are our roots) And wherever we stay, we feel the power of our roots. It's our roots that develop our identity making us what we are. When we lose that bond, we become rootless. Human beings who do not have any roots are a non-entity. In other words, they do not have an identity. They do not know where they are from, and/or where they are heading to. This often makes them feel empty and lost.
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What does the phrase 'a mad rush' refer to in the passage?