JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" id="politician_filter">Filter</a>

<br />

<ul id="people">
    <li class="criminal">Foo</li>
    <li class="saint">Bar</li>
    <li class="politician">Baz</li>
</ul>

JavaScript

$("#politician_filter").click(
    function( event ){
        event.preventDefault();
        $('ul#people li:not(.politician)').hide();
    })