Glitch effect found on http://www.theverge.com/a/luka-artificial-intelligence-memorial-roman-mazurenko-bot

glitch.css

.glitch {
    width: 100%
}
.hero-wrap .glitch:after,
.hero-wrap .glitch:before {
    content: attr(data-text);
    position: absolute;
    width: 100%;
    top: 0;
    color: #222222;
    background: transparent;
    overflow: hidden;
    clip: rect(0, 900px, 0, 0)
}
.hero-wrap .glitch:before {
    left: -1px;
    text-shadow: 1px 0 green;
    animation: noise-anim-2 3s infinite linear alternate-reverse
}
.hero-wrap .glitch:after {
    left: 1px;
    text-shadow: -1px 0 yellow;
    animation: noise-anim 3s infinite linear alternate-reverse
}
@keyframes noise-anim {
    0% {
        clip: rect(43px, 9999px, 76px, 0)
    }
    10% {
        clip: rect(31px, 9999px, 63px, 0)
    }
    20% {
        clip: rect(22px, 9999px, 22px, 0)
    }
    30% {
        clip: rect(16px, 9999px, 13px, 0)
    }
    40% {
        clip: rect(19px, 9999px, 22px, 0)
    }
    50% {
        clip: rect(65px, 9999px, 15px, 0)
    }
    60% {
        clip: rect(72px, 9999px, 73px, 0)
    }
    70% {
        clip: rect(21px, 9999px, 74px, 0)
    }
    80% {
        clip: rect(64px, 9999px, 68px, 0)
    }
    90% {
        clip: rect(23px, 9999px, 62px, 0)
    }
    100% {
        clip: rect(24px, 9999px, 62px, 0)
    }
}
@keyframes noise-anim-2 {
    0% {
        clip: rect(11px, 9999px, 60px, 0)
    }
    10% {
        clip: rect(83px, 9999px, 75px, 0)
    }
    20% {
        clip: rect(87px, 9999px, 75px, 0)
    }
    30% {
        clip: rect(76px, 9999px, 81px, 0)
    }
    40% {
        clip: rect(72px, 9999px, 38px, 0)
    }
    50% {
        clip: rect(82px, 9999px, 82px, 0)
    }
    60% {
        clip: rect(52px, 9999px, 29px, 0)
    }
    70% {
        clip: rect(21px, 9999px, 48px, 0)
    }
    80% {
        clip: rect(13px, 9999px, 47px, 0)
    }
    90% {
        clip: rect(7px, 9999px, 26px, 0)
    }
    100% {
        clip: rect(41px, 9999px, 53px, 0)
    }
}