The Nigeria Security and Civil Defence Corps says at least 100 cases of farmer-herder clashes occur every month in Oyo state.
The property owners called on Governor Seyi Makinde to rescind the plan to implement a 500-metre road corridor expansion.
Tenants, house agents, and landlords have expressed concern over rising house rents in Ibadan, the Oyo state capital, and have called on the government to intervene.
The prosecutor said Mr Aderopo went to the school to beg for alms but started banging at the gate, disturbing school activities when no one came out.
The police said the protesters complained that the factory denied them their welfare packages, adding that criminals soon hijacked the protest.
The Oyo State NLC chairman, Kayode Martins, said the unions would not backtrack on their demands until the FG reduced the electricity tariff.
