I want to ask about the speech of Imam Ali ibin Al-Hussain (PBUH) when he complained about Kufa people, as…

I want to ask about the speech of Imam Ali ibin Al-Hussain (PBUH) when he complained about Kufa people, as narrated in Kitabul Ihtijaj by Sheikh Al-Tabrasi- Vol.2. He (PBUH) went out of the tent and rebuked them for their betrayal. Page 394. "Oh, people, for Allah's sake, I appeal for your answer. Do you know that you wrote for my father and deceived him, and you gave him the covenant, and the pledge, and then you fought and betrayed him?" The first question: what does the Imam's (PBUH) speech implicates? Did Kufa people deceive Imam Hussein (PBUH), and Imam Zainul Abideen (PBUH) is informing a throng of people a wrong belief or a belief that does not go with the right and actual belief of heavenly Imamate? That belief is that the Imam (PBUH) can be deceived by people. The second question: the objector or the contravener asks "how could an infallible Imam describe another infallible Imam as deceived by people?"