Chile's President Michelle Bachelet was evacuated from her hotel in the northern city of Arica after a strong 7.8 magnitude quake triggered a tsunami alert.
She was visiting the area assessing damages after a massive 8.2 magnitude quake and ensuing tsunami rocked the area on Tuesday.
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The violence began after a counter-protester allegedly doused a female rally organiser with pepper spray.
As temperatures climb through the day, the warmest spots are likely to be across western parts of Northern Ireland and western Scotland.
The foreign secretary has criticised internet and social media giants for failing to detect and remove extremist material posted online.