1. expressed personal opinions or bias in what should be objective reporting or writing
Usage: past tense of editorialize
2. wrote or published an editorial expressing a particular viewpoint
Usage: past tense of editorialize

Examples

• The news anchor editorialized about the election results instead of just reporting them.
• She editorialized heavily in her supposedly neutral article about climate change.
• The newspaper editorialized against the proposed tax increase.
• Critics said the documentary editorialized rather than presenting balanced coverage.
• He editorialized about local politics in his weekly column.
• The reporter was criticized for having editorialized during the live broadcast.