Senicide is when older people are treated unfairly or cruelly just because of their age. Imagine if you love playing with your toys and games, but one day some big kids come and take them away from you just because you are five years old. It's like that but instead of toys, it's the way older people are being treated. It can also mean older people being taken away from their homes against their will or not getting the same medical care as younger people. This is not fair because everyone, no matter their age, deserves to be treated with kindness and respect.