The latter desecrated the tombs and demonstrated disrespect...
The latter desecrated the tombs and demonstrated disrespect to the martyrs and the companions of the Prophet (s) buried there. Muslims who disagreed with them were branded as “infidels” and were subsequently killed. The First Destruction of Al-Baqi The Wahhabis believed that visiting the graves and the shrines of the Prophets, the Imams, or the saints was a form of idolatry and totally un-Islamic. Those who did not conform with their belief were killed and their property was confiscated.
Since their first invasion of Iraq, and till nowadays, in fact, the Wahhabis, as well as other rulers of the Gulf States, having been carrying out massacres from which no Muslim who disagreed with them was spared. Obviously, the rest of the Islamic World viewed those graves with deep reverence. Had it not been so, the two caliphs Abu Bakr and Umar would not have expressed their desire for burial near the grave of the Prophet (s).
From 1205 AH to 1217 AH, the Wahhabis made several attempts to gain a foothold in Hijaz but failed. Finally, in 1217 AH, they somehow emerged victorious in Taif where they spilled the innocent blood of Muslims. In 1218 AH, they entered Makkah and destroyed all sacred places and domes there, including the one which served as a canopy over the well of Zamzam. In 1221, the Wahhabis entered Madina to desecrate al-Baqi as well as every mosque they came across.
An attempt was even made to demolish the Prophet's tomb, but for one reason or another, the idea was abandoned. In subsequent years, Muslims from Iraq, Syria, and Egypt were refused entry into Makkah for Hajj. King Al-Saud set a precondition that those who wished to perform the pilgrimage would have to accept Wahhabism or else be branded as non-Muslims, becoming ineligible for entry into the Haram. Al-Baqi was razed to the ground, with no sign of any grave or tomb whatsoever.
But the Saudis were still not quite satisfied with doing all of that. Their king ordered three black attendants at the Prophet's shrine to show him where the treasure of valuable gifts were stored. The Wahhabis plundered the treasure for their own use. Thousands of Muslims fled Makkah and Madina in a bid to save their lives and escape from the mounting pressure and persecution at the hands of the Wahhabis.
Muslims from all over the world denounced this Saudi savagery and exhorted the Caliphate of the Ottoman Empire to save the sacred shrines from total destruction.