The first group of enemies is ideologies. These usually lead other two groups of enemies.
Nationalism Extremism Elitism Racism Etc.
The second group os enemies is attitudes.Often symptoms of ideologies and sometimes the result of conditions. Apathy Distrust Greed Intolerance Inflexibility Intransigence Impatience Prejudice Unforgiveness Disrespect Fear Hatred Hopelessness Despair Jealousy Revenge Bigotry Etc.
The third group of enemies is conditions.Most often these are more a symptom than a cause. Disease Poverty Ignorance Misunderstanding Inequality Need Hunger Suffering Class/Caste Discrimination Censorship Exploitation Dependency Isolation Injustice Intimidation Threats/Bullying Disenfranchisement Servitude Oppression/Repression Rejection Suspicion Slavery Addiction Lack of Shelter Etc.