Scientific knowledge is generally considered to have a positive effect on society. in which situation would scientific knowledge most likely have a negative effect on society?

One very noticeable situation we can all relate to right now, is when scientific knowledge is used to develop weapons. Although we can say that science has had a positive effect on society by developing new methods in agriculture, medicine, and many other fields that support life, this rapid change has also brought about newer problems. Every decade, our knowledge regarding different fields increase. With this increase in knowledge, man gains power. When a man who is unwise, and has ill-intentions gets hold of this power, he uses this knowledge to develop things that can bring harm to humans.