Are parental control services on the Internet legal or they interfere with a right of children to have private space?
Donald Trump vs. Barack Obama.
Should chemical sprays be outlawed?
Air pollution throughout different states.
Poor sanity in the Third World countries.
Global warming: causes and effects.
Should students carry guns on campuses for protection?
Should students be paid based on their performance?
Criminal justice research paper topics
Are men discriminated when it comes laws and punishment?
Should the United States have tougher laws on drug control?
Should smokers pay higher taxes?
Is cyber-bullying a matter of criminal justice?
What is invasion of privacy?
Politicians that broke the law.
Is taking steroids really a crime?
Should farmers be prosecuted for creating poor conditions for animals on the farms?
Should bribers be sentences to capital punishment?
These are examples of great question to think of and explore. Take your time to pick something you are particularly interested in, select a topic that was not studied too much years ago and start working on your scientific paper. You will enjoy the process if you do everything right.