Stock markets mixed as China-US tensions return to fore

Hong Kong extended losses as police fired pepper ball rounds at protesters in the afternoon, with investors fearing the demonstrations could erupt into the worst unrest since last summer.The broad trend across global markets has been upward for weeks as virus deaths and infections ease in most countries and governments begin to reopen their battered economies, fanning hopes for a recovery in the second half of the year.Hong Kong was thrown back into the spotlight Friday when Chinese officials pr