Why was Declan Rice sent off against Brighton?

Declan Rice was |A|
dismissed from Arsenals Premier |B|
League match against Brighton |C|
after kicking the ball |D|
away as Joel Veltman |E|
was about to take |F|
a free kick for |G|
the visitors. Kai Havertzs |H|
opening goal had sent |J|
the Gunners into the |K|
lead and the score |L|
was 1-0 when Rice |M|
was shown the red |O|
card early in the |P|
second half. Rice had |Q|
previously arrived late with |R|
a tackle on Veltman |S|
in the first half |U|
which saw him clip |V|
the defenders leg and |Y|
earn a first yellow |Z|
of the match. Just |A|
before the incident, Veltman |B|
had been awarded a |C|
free kick deep in |D|
his own half and |E|
looked to take the |F|
set piece quickly. Rice |G|
nudged the ball away |H|
just as the Brighton |J|
man took the kick |K|
and he followed through |L|
to hitting Rice on |M|
the leg. The game |O|
was stopped and the |P|
referee decided that kicking |Q|
the ball away was |R|
the initial offence and |S|
Rice was at fault. |U|
“No complaints at |D| all [on the first |E| yellow card for Rice]. |F| I think Veltmans lucky, |G| I really do. I |H| dont know what Declan |J| Rice is meant to |K| do.
“It looked like |L| it was a kick-out |M| at him. I think |O| Joel Veltman is lucky |P| to stay on the |Q| pitch with his kick |R| out. By the letter |S| of the law hes |U| kicked the ball away, |V| it doesnt matter if |Y| he kicks the ball |Z| away 20-yards or six |A| inches.”
Following Rices dismissal, |B| Brighton equalised in the |C| 58th minute through Joao |D| Pedro as Arsenal played |E| on with 10-men. This |F| match was Rices 245th |G| Premier League appearance, and |H| the first time he |J| has been sent off |K| in the competition.