Must-watch videos of the week

(CNN)Trump takes a swipe at a Democratic candidate; Taylor Swift gets heat for her music video; and US Navy footage shows an unidentified flying object. These are the videos you don't want to miss this week.

Trump jabs at Democrat

Conor Lamb reacts to Trump's dig
Conor Lamb reacts to Trump's dig

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    Conor Lamb reacts to Trump's dig

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Conor Lamb reacts to Trump's dig 01:29
US Rep.-elect Conor Lamb, a Pennsylvania Democrat, said people were simply exhausted by the approach his Republican opponent and President Donald Trump took against him during the campaign.

Taylor Swift video under fire

    Taylor Swift gets backlash over dance moves
    Taylor Swift gets backlash over dance moves

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      Taylor Swift gets backlash over dance moves

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    Taylor Swift gets backlash over dance moves 00:56
    The pop star's latest video, for her song "Delicate," is being criticized for the similarity it bears to a perfume ad.

    A terrifying collision

    Video shows police helicopters collide
    Video shows police helicopters collide

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      Video shows police helicopters collide

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    Video shows police helicopters collide 01:02
    Video just released by the National Transportation Safety Board shows the rotor blades of two police helicopters collide in 2012.

    TV hosts mock Tillerson's firing

    Late night spoofs Rex Tillerson's firing
    Late night spoofs Rex Tillerson's firing

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      Late night spoofs Rex Tillerson's firing

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    Late night spoofs Rex Tillerson's firing 01:26
    Comedians poked fun at Trump after he used a tweet to announce the firing of Secretary of State Rex Tillerson.

    UFO vs. US Navy?

    Video shows Navy pilot's encounter with UFO
    Video shows Navy pilot's encounter with UFO

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      Video shows Navy pilot's encounter with UFO

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    Video shows Navy pilot's encounter with UFO 00:45
    A military video from 2015 that shows unidentified aircraft has been made public, following the Pentagon's acknowledgment last year that it had shelved an initiative devoted to identifying unknown objects in the sky.