The studies of San Francisco and Burlington IRV elections show that minorities and also lower socio-economic groups were disproportionately and negatively impacted by IRV.
By your comment I can see that either you didn't watch the video or you don't care about the actual
studies of exit poll data.
Instant Runoff Voting does not work as advertised, and has unintended consequences . IRV does not save money, does not reduce negative campaigning, does not simplify elections, does not increase turnout and does not provide a majority outcome in most elections. In fact, IRV usually provides a plurality result. There are other ways to improve elections or help third parties without the drawbacks of IRV. Read more in this report .
What are the problems with Instant Runoff Voting? IRV is not "as easy as 1-2-3" and hurts third parties by entrenching the two-party political system wherever it has been tried. See how Instant runoff voting has impacted San Francisco, the largest jurisdiction in the US to use it. Implementation of IRV corresponded with a drastic drop in voter turnout in San Francisco's mayoral contests; IRV consistantly suffers from majority failure and several states' fiscal analysis show that IRV creates new and high costs in elections.
http://www.instantrunoffvoting.us/