Answer:
Genocide and terrorism
Step-by-step explanation:
Genocide and terrorism are primarily about killing individuals or groups. Violent and intentional. The difference between genocide and terrorism is that terrorism is always a symbolic act of doing so. While genocide can be a also secret besides a public act. Genocide is also always the act of killing multiple groups of people, while terrorism can be a single act.
Examples of terrorism, unfortunately, often happen today. It happens most often between religions, attacking the opposite.
Genocide occurs nowadays also, but occurred most in World War I and World War II, as well as in other wars and recent history.