PARIS — The veteran journalists did not wear ties and they did not address him as “Mr. President”: two outrageous insults in a television interview this week that served to underscore a new chapter in Emmanuel Macron’s mercurial presidency, one defined by popular anger.

The total lack of deference and a barrage of hostile questions in the interview on Sunday evening have reverberated for days in France and come on top of a coolly savage portrayal of Mr. Macron in a new book of memoirs by his predecessor François Hollande.

What both Mr. Hollande’s book and the television interview had in common was not only the substance of their attacks — that Mr. Macron is a self-seeking servant of society’s fortunate — but also their underlying message: It is open season on the French president.

The undisguised hostility has made clear that, less than a year into this new presidency, anti-Macron sentiment is emerging as a potent force. It is being fueled by a pervasive sense that Mr. Macron is pushing too far, too fast in too many areas — nicking at the benefits of pensioners and low earners, giving dollops to the well-off and slashing sacred worker privileges.