Is it true that Yazid demolished the Kaaba? And why did Allah permit incidents such as floods sweeping through the Kaaba and the Juhayman uprising, despite His (the Almighty’s) saying that He Himself secures His House?

Summary of the Answer:

Yazid ibn Mu'awiyah did not demolish the Kaaba. Allah honored and magnified the Sacred House, making it a qibla for people and a sanctuary. The events that occurred in the Sacred Mosque, which contradict its sanctity, are part of Allah's universal, decreed will, which He wills with His wisdom and knowledge to test and try creation, distinguish the wicked from the good, and choose the martyrs. These events only increased its sanctity, honor, and elevation in the eyes of the believers.