Complex sentence: Three candidates canceled campaign events early as "a mark of respect", with Fillon urging others to do the same; Mélenchon said the violence should not interfere with the election process.
Split into simpler sentences: Three candidates canceled campaign events early as "a mark of respect", with Fillon urging others to do the same. This action was met with disagreement from Mélenchon, who said the violence should not interfere with the election process.