In London, the power of humans is seen to be confining. Link this to context.
Blake published London in the 'reign of terror'. In this period, the French payed as an inspiration for lots of radicals as it was a symbol of how the oppressed could seize power from the privaleged in society. Blake was anti-monarchy so he wanted a revolution that would remove the thrown.
In London, Blake criticises the abuse of power. Link this to context.
Blake was a Christian but he loathed organised religion and the established church as they were highly hypocritical. The church shared a message of hope and peace but instead of acting upon their values and using their money for charitable deeds, it was used for new buildings.
In London, human power causes unfair circumstances that cause the innocent to suffer. Link this to context.
Blake wrote London during a time of intense industrial growth, where poverty, child labour, and social inequality were widespread, and powerful institutions did little to help the suffering poor.