Why did Parashuram kill the Kshatriyas from the earth for 21 times?

Lord Parashuram is considered as the sixth incarnation of Lord Vishnu. It is famous for them that they destroyed the then tyrannical and autocratic Kshatriyas 21 times. <a href="http://www.myrisinghope.com/2017/04/why-did-parashuram-kill-kshatriyas-from.html" rel="noopener ugc nofollow" target="_blank">But do you know why Lord Parashuram did this? This gives an interesting mythology</a> - The King of the city of Mahishmati was the son of King Kartaviry and Rani Kaushik, of the Haiyya dynasty of the Sahastrajun Kshatriya society. The real name of Sahastrajun was Arjuna. He made great penance to please Dattatreya. Dattatreya was pleased with his penance and asked him to ask for a boon, so he received 10,000 blessings from Dattatreya. After this, his name was Sahastrajun from Arjuna. It is also called Kartairavir because it is the son of King Swaminarayan and King Kartwarya. <a href="https://medium.com/@hrising19/why-did-parashuram-kill-the-kshatriyas-from-the-earth-for-21-times-2e6a6d048db4">Visit Now</a>